Meet Our Testing Team

Brad

Keith

Jackson

Lauren
General Overview
Pros
- Wide range of designs, thicknesses, and firmness options
- Good overall edge support
- A+ BBB rating
Cons
- Questionable durability
- Limited specification disclosures
- Availability largely limited to eastern U.S.
King Koil mattresses are sold exclusively through 3rd-party retailers.
If you'd rather shop online, read our recommendations and top picks.
Shop Online Mattresses- World Edition
- World Luxury
- World Extended Life
- World Luxury Intimate
- iMattress
Full Sleep Rating
Full Sleep Rating
Full Sleep Rating
Full Sleep Rating
Full Sleep Rating
- World Edition
- World Luxury
- World Extended Life
- World Luxury Intimate
- iMattress

Durability
Specifies how long the product maintains structure, providing comfort and support before it begins to deteriorate. For reference, the average mattress lifespan is 6-8 years.
Durability is a common complaint among World Edition mattress owners; the sleep surfaces often develop sagging and begin to deteriorate after less than five years of use.

Durability
x
Specifies how long the product maintains structure, providing comfort and support before it begins to deteriorate. For reference, the average mattress lifespan is 6-8 years.
Specifies how long the product maintains structure, providing comfort and support before it begins to deteriorate. For reference, the average mattress lifespan is 6-8 years.
Durability is a common complaint among World Edition mattress owners; the sleep surfaces often develop sagging and begin to deteriorate after less than five years of use.

Motion Isolation
A measure of how effectively a mattress absorbs motion across its surface, preventing partner disturbance.
Models in the World Edition innerspring collection offer minimal motion isolation.

Motion Isolation
x
A measure of how effectively a mattress absorbs motion across its surface, preventing partner disturbance.
A measure of how effectively a mattress absorbs motion across its surface, preventing partner disturbance.
Models in the World Edition innerspring collection offer minimal motion isolation.

Off-gassing
Most new products emit chemical smells after being removed from packaging. Off-gassing odors are considered non-toxic, but can be quite unpleasant nonetheless.
Off-gassing does not appear to be a major issue with World Edition mattresses, and few owners report excessively strong and/or long-lasting odors.

Off-gassing
x
Most new products emit chemical smells after being removed from packaging. Off-gassing odors are considered non-toxic, but can be quite unpleasant nonetheless.
Most new products emit chemical smells after being removed from packaging. Off-gassing odors are considered non-toxic, but can be quite unpleasant nonetheless.
Off-gassing does not appear to be a major issue with World Edition mattresses, and few owners report excessively strong and/or long-lasting odors.

Pressure Relief
This refers to the degree to which a mattress molds to or cradles the contours of the body. This helps alleviate pressure point pain, especially on the hips and shoulders.
World Edition mattresses do not conform very closely, and are associated with minimal pain and pressure relief.

Pressure Relief
x
This refers to the degree to which a mattress molds to or cradles the contours of the body. This helps alleviate pressure point pain, especially on the hips and shoulders.
This refers to the degree to which a mattress molds to or cradles the contours of the body. This helps alleviate pressure point pain, especially on the hips and shoulders.
World Edition mattresses do not conform very closely, and are associated with minimal pain and pressure relief.

Temperature Neutrality
The temperature of a mattress throughout the night is affected by how much body heat is retained. Several factors affect temperature neutrality, including material composition, layer thickness, and dissipation of heat through airflow.
Most King Koil World Edition mattress owners report minimal heat retention and say their mattress sleeps fairly cool.

Temperature Neutrality
x
The temperature of a mattress throughout the night is affected by how much body heat is retained. Several factors affect temperature neutrality, including material composition, layer thickness, and dissipation of heat through airflow.
The temperature of a mattress throughout the night is affected by how much body heat is retained. Several factors affect temperature neutrality, including material composition, layer thickness, and dissipation of heat through airflow.
Most King Koil World Edition mattress owners report minimal heat retention and say their mattress sleeps fairly cool.

Edge Support
The degree to which the perimeter of the mattress supports body weight. In some cases, mattresses may sink when weight is applied. This sinkage, often called “roll-off”, affects how closely you might sleep to the edge of the bed.
Edge support seems to be a key strength among innerspring mattresses in the World Edition collection.

Edge Support
x
The degree to which the perimeter of the mattress supports body weight. In some cases, mattresses may sink when weight is applied. This sinkage, often called “roll-off”, affects how closely you might sleep to the edge of the bed.
The degree to which the perimeter of the mattress supports body weight. In some cases, mattresses may sink when weight is applied. This sinkage, often called “roll-off”, affects how closely you might sleep to the edge of the bed.
Edge support seems to be a key strength among innerspring mattresses in the World Edition collection.

Noise
Certain mattresses – particularly those with coils – can be quite noisy when bearing weight. Others are nearly silent. Material composition is often the limiting factor for noise potential.
King Koil World Edition innersprings may be somewhat noisy, but the pocketed coils minimize creaking to some extent.

Noise
x
Certain mattresses – particularly those with coils – can be quite noisy when bearing weight. Others are nearly silent. Material composition is often the limiting factor for noise potential.
Certain mattresses – particularly those with coils – can be quite noisy when bearing weight. Others are nearly silent. Material composition is often the limiting factor for noise potential.
King Koil World Edition innersprings may be somewhat noisy, but the pocketed coils minimize creaking to some extent.

Sex
Mattresses that are bouncier and more responsive tend to be better for sex, as they’re easier to change positions on. In contrast, unresponsive mattresses can cause couples to have trouble switching positions.
Most World Edition mattresses are fairly responsive and bouncy, and couples who own them say they are good for sex.

Sex
x
Mattresses that are bouncier and more responsive tend to be better for sex, as they’re easier to change positions on. In contrast, unresponsive mattresses can cause couples to have trouble switching positions.
Mattresses that are bouncier and more responsive tend to be better for sex, as they’re easier to change positions on. In contrast, unresponsive mattresses can cause couples to have trouble switching positions.
Most World Edition mattresses are fairly responsive and bouncy, and couples who own them say they are good for sex.

Durability
Specifies how long the product maintains structure, providing comfort and support before it begins to deteriorate. For reference, the average mattress lifespan is 6-8 years.
Durability is a common complaint among World Luxury mattress owners; the sleep surfaces often develop sagging and begin to deteriorate after less than five years of use.

Durability
x
Specifies how long the product maintains structure, providing comfort and support before it begins to deteriorate. For reference, the average mattress lifespan is 6-8 years.
Specifies how long the product maintains structure, providing comfort and support before it begins to deteriorate. For reference, the average mattress lifespan is 6-8 years.
Durability is a common complaint among World Luxury mattress owners; the sleep surfaces often develop sagging and begin to deteriorate after less than five years of use.

Motion Isolation
A measure of how effectively a mattress absorbs motion across its surface, preventing partner disturbance.
Models in the World Luxury hybrid collection offer minimal motion isolation.

Motion Isolation
x
A measure of how effectively a mattress absorbs motion across its surface, preventing partner disturbance.
A measure of how effectively a mattress absorbs motion across its surface, preventing partner disturbance.
Models in the World Luxury hybrid collection offer minimal motion isolation.

Off-gassing
Most new products emit chemical smells after being removed from packaging. Off-gassing odors are considered non-toxic, but can be quite unpleasant nonetheless.
Off-gassing does not appear to be a major issue with World Luxury mattresses, and few owners report excessively strong and/or long-lasting odors.

Off-gassing
x
Most new products emit chemical smells after being removed from packaging. Off-gassing odors are considered non-toxic, but can be quite unpleasant nonetheless.
Most new products emit chemical smells after being removed from packaging. Off-gassing odors are considered non-toxic, but can be quite unpleasant nonetheless.
Off-gassing does not appear to be a major issue with World Luxury mattresses, and few owners report excessively strong and/or long-lasting odors.

Pressure Relief
This refers to the degree to which a mattress molds to or cradles the contours of the body. This helps alleviate pressure point pain, especially on the hips and shoulders.
World Luxury mattresses do not conform very closely, and are associated with minimal pain and pressure relief.

Pressure Relief
x
This refers to the degree to which a mattress molds to or cradles the contours of the body. This helps alleviate pressure point pain, especially on the hips and shoulders.
This refers to the degree to which a mattress molds to or cradles the contours of the body. This helps alleviate pressure point pain, especially on the hips and shoulders.
World Luxury mattresses do not conform very closely, and are associated with minimal pain and pressure relief.

Temperature Neutrality
The temperature of a mattress throughout the night is affected by how much body heat is retained. Several factors affect temperature neutrality, including material composition, layer thickness, and dissipation of heat through airflow.
Most King Koil World Luxury mattress owners report minimal heat retention and say their mattress sleeps fairly cool.

Temperature Neutrality
x
The temperature of a mattress throughout the night is affected by how much body heat is retained. Several factors affect temperature neutrality, including material composition, layer thickness, and dissipation of heat through airflow.
The temperature of a mattress throughout the night is affected by how much body heat is retained. Several factors affect temperature neutrality, including material composition, layer thickness, and dissipation of heat through airflow.
Most King Koil World Luxury mattress owners report minimal heat retention and say their mattress sleeps fairly cool.

Edge Support
The degree to which the perimeter of the mattress supports body weight. In some cases, mattresses may sink when weight is applied. This sinkage, often called “roll-off”, affects how closely you might sleep to the edge of the bed.
Edge support seems to be a key strength among hybrid mattresses in the World Luxury collection.

Edge Support
x
The degree to which the perimeter of the mattress supports body weight. In some cases, mattresses may sink when weight is applied. This sinkage, often called “roll-off”, affects how closely you might sleep to the edge of the bed.
The degree to which the perimeter of the mattress supports body weight. In some cases, mattresses may sink when weight is applied. This sinkage, often called “roll-off”, affects how closely you might sleep to the edge of the bed.
Edge support seems to be a key strength among hybrid mattresses in the World Luxury collection.

Noise
Certain mattresses – particularly those with coils – can be quite noisy when bearing weight. Others are nearly silent. Material composition is often the limiting factor for noise potential.
King Koil World Luxury hybrids may be somewhat noisy, but the pocketed coils minimize creaking to some extent.

Noise
x
Certain mattresses – particularly those with coils – can be quite noisy when bearing weight. Others are nearly silent. Material composition is often the limiting factor for noise potential.
Certain mattresses – particularly those with coils – can be quite noisy when bearing weight. Others are nearly silent. Material composition is often the limiting factor for noise potential.
King Koil World Luxury hybrids may be somewhat noisy, but the pocketed coils minimize creaking to some extent.

Sex
Mattresses that are bouncier and more responsive tend to be better for sex, as they’re easier to change positions on. In contrast, unresponsive mattresses can cause couples to have trouble switching positions.
Most World Luxury mattresses are fairly responsive and bouncy, and couples who own them say they are good for sex.

Sex
x
Mattresses that are bouncier and more responsive tend to be better for sex, as they’re easier to change positions on. In contrast, unresponsive mattresses can cause couples to have trouble switching positions.
Mattresses that are bouncier and more responsive tend to be better for sex, as they’re easier to change positions on. In contrast, unresponsive mattresses can cause couples to have trouble switching positions.
Most World Luxury mattresses are fairly responsive and bouncy, and couples who own them say they are good for sex.

Durability
Specifies how long the product maintains structure, providing comfort and support before it begins to deteriorate. For reference, the average mattress lifespan is 6-8 years.
Durability is a common complaint among World Extended Life mattress owners; the sleep surfaces often develop sagging and begin to deteriorate after less than five years of use.

Durability
x
Specifies how long the product maintains structure, providing comfort and support before it begins to deteriorate. For reference, the average mattress lifespan is 6-8 years.
Specifies how long the product maintains structure, providing comfort and support before it begins to deteriorate. For reference, the average mattress lifespan is 6-8 years.
Durability is a common complaint among World Extended Life mattress owners; the sleep surfaces often develop sagging and begin to deteriorate after less than five years of use.

Motion Isolation
A measure of how effectively a mattress absorbs motion across its surface, preventing partner disturbance.
Models in the World Extended Life hybrid collection offer minimal motion isolation.

Motion Isolation
x
A measure of how effectively a mattress absorbs motion across its surface, preventing partner disturbance.
A measure of how effectively a mattress absorbs motion across its surface, preventing partner disturbance.
Models in the World Extended Life hybrid collection offer minimal motion isolation.

Off-gassing
Most new products emit chemical smells after being removed from packaging. Off-gassing odors are considered non-toxic, but can be quite unpleasant nonetheless.
Off-gassing does not appear to be a major issue with World Extended Life mattresses, and few owners report excessively strong and/or long-lasting odors.

Off-gassing
x
Most new products emit chemical smells after being removed from packaging. Off-gassing odors are considered non-toxic, but can be quite unpleasant nonetheless.
Most new products emit chemical smells after being removed from packaging. Off-gassing odors are considered non-toxic, but can be quite unpleasant nonetheless.
Off-gassing does not appear to be a major issue with World Extended Life mattresses, and few owners report excessively strong and/or long-lasting odors.

Pressure Relief
This refers to the degree to which a mattress molds to or cradles the contours of the body. This helps alleviate pressure point pain, especially on the hips and shoulders.
World Extended Life mattresses do not conform very closely, and are associated with minimal pain and pressure relief.

Pressure Relief
x
This refers to the degree to which a mattress molds to or cradles the contours of the body. This helps alleviate pressure point pain, especially on the hips and shoulders.
This refers to the degree to which a mattress molds to or cradles the contours of the body. This helps alleviate pressure point pain, especially on the hips and shoulders.
World Extended Life mattresses do not conform very closely, and are associated with minimal pain and pressure relief.

Temperature Neutrality
The temperature of a mattress throughout the night is affected by how much body heat is retained. Several factors affect temperature neutrality, including material composition, layer thickness, and dissipation of heat through airflow.
Most King Koil World Extended Life mattress owners report minimal heat retention and say their mattress sleeps fairly cool.

Temperature Neutrality
x
The temperature of a mattress throughout the night is affected by how much body heat is retained. Several factors affect temperature neutrality, including material composition, layer thickness, and dissipation of heat through airflow.
The temperature of a mattress throughout the night is affected by how much body heat is retained. Several factors affect temperature neutrality, including material composition, layer thickness, and dissipation of heat through airflow.
Most King Koil World Extended Life mattress owners report minimal heat retention and say their mattress sleeps fairly cool.

Edge Support
The degree to which the perimeter of the mattress supports body weight. In some cases, mattresses may sink when weight is applied. This sinkage, often called “roll-off”, affects how closely you might sleep to the edge of the bed.
Edge support seems to be a key strength among hybrid mattresses in the World Extended Life collection.

Edge Support
x
The degree to which the perimeter of the mattress supports body weight. In some cases, mattresses may sink when weight is applied. This sinkage, often called “roll-off”, affects how closely you might sleep to the edge of the bed.
The degree to which the perimeter of the mattress supports body weight. In some cases, mattresses may sink when weight is applied. This sinkage, often called “roll-off”, affects how closely you might sleep to the edge of the bed.
Edge support seems to be a key strength among hybrid mattresses in the World Extended Life collection.

Noise
Certain mattresses – particularly those with coils – can be quite noisy when bearing weight. Others are nearly silent. Material composition is often the limiting factor for noise potential.
King Koil World Extended Life hybrids may be somewhat noisy, but the pocketed coils minimize creaking to some extent.

Noise
x
Certain mattresses – particularly those with coils – can be quite noisy when bearing weight. Others are nearly silent. Material composition is often the limiting factor for noise potential.
Certain mattresses – particularly those with coils – can be quite noisy when bearing weight. Others are nearly silent. Material composition is often the limiting factor for noise potential.
King Koil World Extended Life hybrids may be somewhat noisy, but the pocketed coils minimize creaking to some extent.

Sex
Mattresses that are bouncier and more responsive tend to be better for sex, as they’re easier to change positions on. In contrast, unresponsive mattresses can cause couples to have trouble switching positions.
Most World Extended Life mattresses are fairly responsive and bouncy, and couples who own them say they are good for sex.

Sex
x
Mattresses that are bouncier and more responsive tend to be better for sex, as they’re easier to change positions on. In contrast, unresponsive mattresses can cause couples to have trouble switching positions.
Mattresses that are bouncier and more responsive tend to be better for sex, as they’re easier to change positions on. In contrast, unresponsive mattresses can cause couples to have trouble switching positions.
Most World Extended Life mattresses are fairly responsive and bouncy, and couples who own them say they are good for sex.

Durability
Specifies how long the product maintains structure, providing comfort and support before it begins to deteriorate. For reference, the average mattress lifespan is 6-8 years.
Durability is a common complaint among King Koil owners; mattresses often develop sagging and begin to deteriorate after less than five years of use.

Durability
x
Specifies how long the product maintains structure, providing comfort and support before it begins to deteriorate. For reference, the average mattress lifespan is 6-8 years.
Specifies how long the product maintains structure, providing comfort and support before it begins to deteriorate. For reference, the average mattress lifespan is 6-8 years.
Durability is a common complaint among King Koil owners; mattresses often develop sagging and begin to deteriorate after less than five years of use.

Motion Isolation
A measure of how effectively a mattress absorbs motion across its surface, preventing partner disturbance.
According to owner experiences, the World Luxury Intimate collection doesn't have great motion isolation and partner disturbance can be an issue.

Motion Isolation
x
A measure of how effectively a mattress absorbs motion across its surface, preventing partner disturbance.
A measure of how effectively a mattress absorbs motion across its surface, preventing partner disturbance.
According to owner experiences, the World Luxury Intimate collection doesn't have great motion isolation and partner disturbance can be an issue.

Off-gassing
Most new products emit chemical smells after being removed from packaging. Off-gassing odors are considered non-toxic, but can be quite unpleasant nonetheless.
Off-gassing does not appear to be a major issue with King Koil mattresses, and few owners report excessively strong and/or long-lasting odors.

Off-gassing
x
Most new products emit chemical smells after being removed from packaging. Off-gassing odors are considered non-toxic, but can be quite unpleasant nonetheless.
Most new products emit chemical smells after being removed from packaging. Off-gassing odors are considered non-toxic, but can be quite unpleasant nonetheless.
Off-gassing does not appear to be a major issue with King Koil mattresses, and few owners report excessively strong and/or long-lasting odors.

Pressure Relief
This refers to the degree to which a mattress molds to or cradles the contours of the body. This helps alleviate pressure point pain, especially on the hips and shoulders.
King Koil World Luxury Intimate mattress owners report less conforming than some other mattresses in their collection.

Pressure Relief
x
This refers to the degree to which a mattress molds to or cradles the contours of the body. This helps alleviate pressure point pain, especially on the hips and shoulders.
This refers to the degree to which a mattress molds to or cradles the contours of the body. This helps alleviate pressure point pain, especially on the hips and shoulders.
King Koil World Luxury Intimate mattress owners report less conforming than some other mattresses in their collection.

Temperature Neutrality
The temperature of a mattress throughout the night is affected by how much body heat is retained. Several factors affect temperature neutrality, including material composition, layer thickness, and dissipation of heat through airflow.
King Koil World Luxury Intimate mattress owners report minimal heat retention and say their mattresses sleep fairly cool.

Temperature Neutrality
x
The temperature of a mattress throughout the night is affected by how much body heat is retained. Several factors affect temperature neutrality, including material composition, layer thickness, and dissipation of heat through airflow.
The temperature of a mattress throughout the night is affected by how much body heat is retained. Several factors affect temperature neutrality, including material composition, layer thickness, and dissipation of heat through airflow.
King Koil World Luxury Intimate mattress owners report minimal heat retention and say their mattresses sleep fairly cool.

Edge Support
The degree to which the perimeter of the mattress supports body weight. In some cases, mattresses may sink when weight is applied. This sinkage, often called “roll-off”, affects how closely you might sleep to the edge of the bed.
Edge support seems to be a key strength among King Koil mattresses, particularly innersprings and hybrids with reinforced support cores, based on owner experiences.

Edge Support
x
The degree to which the perimeter of the mattress supports body weight. In some cases, mattresses may sink when weight is applied. This sinkage, often called “roll-off”, affects how closely you might sleep to the edge of the bed.
The degree to which the perimeter of the mattress supports body weight. In some cases, mattresses may sink when weight is applied. This sinkage, often called “roll-off”, affects how closely you might sleep to the edge of the bed.
Edge support seems to be a key strength among King Koil mattresses, particularly innersprings and hybrids with reinforced support cores, based on owner experiences.

Noise
Certain mattresses – particularly those with coils – can be quite noisy when bearing weight. Others are nearly silent. Material composition is often the limiting factor for noise potential.
King Koil innersprings and hybrids may be somewhat noisy, but the pocketed coils minimize creaking to some extent.

Noise
x
Certain mattresses – particularly those with coils – can be quite noisy when bearing weight. Others are nearly silent. Material composition is often the limiting factor for noise potential.
Certain mattresses – particularly those with coils – can be quite noisy when bearing weight. Others are nearly silent. Material composition is often the limiting factor for noise potential.
King Koil innersprings and hybrids may be somewhat noisy, but the pocketed coils minimize creaking to some extent.

Sex
Mattresses that are bouncier and more responsive tend to be better for sex, as they’re easier to change positions on. In contrast, unresponsive mattresses can cause couples to have trouble switching positions.
Most King Koil mattresses are fairly responsive and bouncy, and couples who own them say they are good for sex.

Sex
x
Mattresses that are bouncier and more responsive tend to be better for sex, as they’re easier to change positions on. In contrast, unresponsive mattresses can cause couples to have trouble switching positions.
Mattresses that are bouncier and more responsive tend to be better for sex, as they’re easier to change positions on. In contrast, unresponsive mattresses can cause couples to have trouble switching positions.
Most King Koil mattresses are fairly responsive and bouncy, and couples who own them say they are good for sex.

Durability
Specifies how long the product maintains structure, providing comfort and support before it begins to deteriorate. For reference, the average mattress lifespan is 6-8 years.
Durability is a common complaint among King Koil owners; mattresses often develop sagging and begin to deteriorate after less than five years of use.

Durability
x
Specifies how long the product maintains structure, providing comfort and support before it begins to deteriorate. For reference, the average mattress lifespan is 6-8 years.
Specifies how long the product maintains structure, providing comfort and support before it begins to deteriorate. For reference, the average mattress lifespan is 6-8 years.
Durability is a common complaint among King Koil owners; mattresses often develop sagging and begin to deteriorate after less than five years of use.

Motion Isolation
A measure of how effectively a mattress absorbs motion across its surface, preventing partner disturbance.
The iMattress collection — particularly all-foam models — isolate transfer so a noticeable extent.

Motion Isolation
x
A measure of how effectively a mattress absorbs motion across its surface, preventing partner disturbance.
A measure of how effectively a mattress absorbs motion across its surface, preventing partner disturbance.
The iMattress collection — particularly all-foam models — isolate transfer so a noticeable extent.

Off-gassing
Most new products emit chemical smells after being removed from packaging. Off-gassing odors are considered non-toxic, but can be quite unpleasant nonetheless.
Off-gassing does not appear to be a major issue with King Koil mattresses, and few owners report excessively strong and/or long-lasting odors.

Off-gassing
x
Most new products emit chemical smells after being removed from packaging. Off-gassing odors are considered non-toxic, but can be quite unpleasant nonetheless.
Most new products emit chemical smells after being removed from packaging. Off-gassing odors are considered non-toxic, but can be quite unpleasant nonetheless.
Off-gassing does not appear to be a major issue with King Koil mattresses, and few owners report excessively strong and/or long-lasting odors.

Pressure Relief
This refers to the degree to which a mattress molds to or cradles the contours of the body. This helps alleviate pressure point pain, especially on the hips and shoulders.
iMattress models conform closer than other King Koil mattresses, providing a contoured fit with some pressure and pain relief. Our feedback indicates that higher-cost models conform closer than lower-cost models.

Pressure Relief
x
This refers to the degree to which a mattress molds to or cradles the contours of the body. This helps alleviate pressure point pain, especially on the hips and shoulders.
This refers to the degree to which a mattress molds to or cradles the contours of the body. This helps alleviate pressure point pain, especially on the hips and shoulders.
iMattress models conform closer than other King Koil mattresses, providing a contoured fit with some pressure and pain relief. Our feedback indicates that higher-cost models conform closer than lower-cost models.

Temperature Neutrality
The temperature of a mattress throughout the night is affected by how much body heat is retained. Several factors affect temperature neutrality, including material composition, layer thickness, and dissipation of heat through airflow.
The iMattress tends to trap heat according to owner experiences at higher rates than other King Koil collections.

Temperature Neutrality
x
The temperature of a mattress throughout the night is affected by how much body heat is retained. Several factors affect temperature neutrality, including material composition, layer thickness, and dissipation of heat through airflow.
The temperature of a mattress throughout the night is affected by how much body heat is retained. Several factors affect temperature neutrality, including material composition, layer thickness, and dissipation of heat through airflow.
The iMattress tends to trap heat according to owner experiences at higher rates than other King Koil collections.

Edge Support
The degree to which the perimeter of the mattress supports body weight. In some cases, mattresses may sink when weight is applied. This sinkage, often called “roll-off”, affects how closely you might sleep to the edge of the bed.
Foam mattresses offer less edge support, but minimal sinkage has been reported in the iMattress collection.

Edge Support
x
The degree to which the perimeter of the mattress supports body weight. In some cases, mattresses may sink when weight is applied. This sinkage, often called “roll-off”, affects how closely you might sleep to the edge of the bed.
The degree to which the perimeter of the mattress supports body weight. In some cases, mattresses may sink when weight is applied. This sinkage, often called “roll-off”, affects how closely you might sleep to the edge of the bed.
Foam mattresses offer less edge support, but minimal sinkage has been reported in the iMattress collection.

Noise
Certain mattresses – particularly those with coils – can be quite noisy when bearing weight. Others are nearly silent. Material composition is often the limiting factor for noise potential.
Foam mattresses in the iMattress collection are virtually silent when bearing weight according to owner experiences.

Noise
x
Certain mattresses – particularly those with coils – can be quite noisy when bearing weight. Others are nearly silent. Material composition is often the limiting factor for noise potential.
Certain mattresses – particularly those with coils – can be quite noisy when bearing weight. Others are nearly silent. Material composition is often the limiting factor for noise potential.
Foam mattresses in the iMattress collection are virtually silent when bearing weight according to owner experiences.

Sex
Mattresses that are bouncier and more responsive tend to be better for sex, as they’re easier to change positions on. In contrast, unresponsive mattresses can cause couples to have trouble switching positions.
The iMattress is on par with other all foam mattresses for sex as it isn't very responsive/bouncy

Sex
x
Mattresses that are bouncier and more responsive tend to be better for sex, as they’re easier to change positions on. In contrast, unresponsive mattresses can cause couples to have trouble switching positions.
Mattresses that are bouncier and more responsive tend to be better for sex, as they’re easier to change positions on. In contrast, unresponsive mattresses can cause couples to have trouble switching positions.
The iMattress is on par with other all foam mattresses for sex as it isn't very responsive/bouncy
What Type of Sleeper is Best Suited to a King Koil Mattress?
Based on our customer feedback, King Koil mattresses received the following grades among sleepers of different weights and preferred sleep positions.
Ratings are sorted by mattress collection, not individual model; sleeper experiences may vary between different models in the same collection.
Please note that these ratings are subjective, and that everyone has varying experiences on different mattresses.
Sleeper comfort and spinal support are the most important factors when it comes to selecting a mattress.
For more information on sleeping positions please see our guides for side, back, stomach and combination sleepers.
- World Edition
- World Luxury
- World Extended Life
- World Luxury Intimate
- iMattress
Weight | Light | Average | Heavy |
Sleep Position | Less than 130 LBS | 130 LBS - 230 LBS | Greater than 230 LBS |
Side | |||
Back | |||
Stomach |
Weight | Light | Average | Heavy |
Sleep Position | Less than 130 LBS | 130 LBS - 230 LBS | Greater than 230 LBS |
Side | |||
Back | |||
Stomach |
Weight | Light | Average | Heavy |
Sleep Position | Less than 130 LBS | 130 LBS - 230 LBS | Greater than 230 LBS |
Side | |||
Back | |||
Stomach |
Weight | Light | Average | Heavy |
Sleep Position | Less than 130 LBS | 130 LBS - 230 LBS | Greater than 230 LBS |
Side | |||
Back | |||
Stomach |
Weight | Light | Average | Heavy |
Sleep Position | Less than 130 LBS | 130 LBS - 230 LBS | Greater than 230 LBS |
Side | |||
Back | |||
Stomach |
Compare Mattresses
How Does a King Koil Mattress Compare to Other Beds?
As any consumer does with a product they’re considering, our mattress assessments naturally involve comparing them with other similar products. Be it composition, firmness, or price, we think it’s important to see how King Koil mattresses stack up to other beds.
Check out our selections below if you’d like to see a few comparable mattresses.
Similar Mattress Options
![]() | ![]() Saatva Classic | ![]() GhostBed Luxe | ![]() DreamCloud Mattress | |
MATTRESS TYPE | Innerspring | Foam | Hybrid | |
PRICE RANGE | $1,795 | $1,375.00 | $1,598 | |
FIRMNESS | 4,6,7.5 | 5 | 6.5 | |
AVAILABILITY | online | online | online | |
SLEEP TRIAL | 365 nights | 101 nights | 365 nights | |
WARRANTY LENGTH | Lifetime, Limited | 25 years | Lifetime |
Mattress Technical Details
What You Need to Know About the King Koil Mattress
Sizing and Pricing
The firmness of a King Koil mattress varies by selected model. A breakdown of firmness and construction specifications is found in the table below, but please note that King Koil does not disclose certain specs (such as thickness or foam density) for certain models/collections.
Firmness is rated on a scale of 1 to 10. For more information on how firmness is calculated, please visit our Mattress Firmness page.
King Coil Collection | Product Name | Firmness Options | Thickness | Support Core Components | Comfort Layer Components | Cover Components |
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World Edition | Siena Firm | 7 (Firm) | 11 1/2″ | 8″ Pocketed Coils (789 Coil Count) 1 1/2″ Base Polyfoam |
1″ Polyfoam | 1″ Quilted Fabric Infused with Gel Foam |
Sydney Firm | 5.5 (Medium) | 12″ | 8″ Pocketed Coils (789 Coil Count) 1 1/2″ Base Polyfoam |
1″ Polyfoam | 1 1/2″Quilted Fabric Infused with Gel Foam | |
Sydney Euro Top | 4 (Medium Soft) | 12″ | 8″ Pocketed Coils (789 Coil Count) 1 1/2″ Base Polyfoam |
1″ Polyfoam | 1 1/2″Quilted Fabric Infused with Gel Foam | |
Monaco Plush | 3 (Soft) | 13″ | 8″ Pocketed Coils (789 Coil Count) 1 1/2″ Base Polyfoam |
1 1/2″ Polyfoam 1/2″ Memory Foam Insert |
1 1/2″Quilted Fabric Infused with Gel Foam | |
Monaco Euro Top | 5.5 (Medium) | 12 1/2″ | 8″ Pocketed Coils (789 Coil Count) 1 1/2″ Base Polyfoam |
1 1/2″ Polyfoam 1/2″ Memory Foam Insert |
1 1/2″Quilted Fabric Infused with Gel Foam | |
World Luxury | Kingsley Firm | 5.5 (Medium) | 13″ | 8″ Pocketed Coils (1,022 Coil Count) 1 1/2″ Base Polyfoam |
1″ Memory Foam 1″ Polyfoam |
1 1/2″ Silk and Wool Blend Infused with Gel Foam |
Kingsley Plush | 4 (Medium Soft) | 13 1/2″ | 8″ Pocketed Coils (1,022 Coil Count) 1 1/2″ Base Polyfoam |
1″ Memory Foam 1 1 /2″ Polyfoam |
1 1/2″ Silk and Wool Blend Infused with Gel Foam | |
Kingsley Euro Top | 3 (Soft) | 12″ | 8″ Pocketed Coils (1,022 Coil Count) 1 1/2″ Base Polyfoam |
1″ Memory Foam with 2 Polyfoam Inserts | 1 1/2″ Silk and Wool Blend Infused with Gel Foam | |
Montego Luxury Firm | 5.5 (Medium) | 14″ | 8″ Pocketed Coils (1,022 Coil Count) 1 1/2″ Base Polyfoam |
1″ Memory Foam 1″ Gel Memory Foam 1″ Polyfoam |
1 1/2″ Silk and Wool Blend Infused with Gel Foam | |
Montego Luxury Plush | 3 (Soft) | 14″ | 8″ Pocketed Coils (1,022 Coil Count) 1 1/2″ Base Polyfoam |
2″ Memory Foam 1″ Gel Memory Foam |
1 1/2″ Silk and Wool Blend Infused with Gel Foam | |
Montego Luxury Pillow Top | 4 (Medium Soft) | 13″ | 8″ Pocketed Coils (1,022 Coil Count) 1 1/2″ Base Polyfoam |
1″ Polyfoam 1″ Gel Memory Foam 2″ Memory Foam Inserts |
1 1/2″ Silk and Wool Blend Infused with Gel Foam | |
World Extended Life | Athens Firm | 7 (Firm) | 13 1/2″ | 8″ Pocketed Coils (1,022 Coil Count) 1 1/2″ Base Polyfoam |
2″ Talalay Latex 1″ HD Polyfoam |
Fabric Infused with Gel Foam |
Athens Plush | 5.5 (Medium) | 13 1/2″ | 8″ Pocketed Coils (1,022 Coil Count) 1 1/2″ Base Polyfoam |
1″ Polyfoam 2″ Talalay Latex |
Fabric Infused with HD Foam | |
World Luxury Intimate | Vienna Plush | 4 (Medium Soft) | N/A | Pocketed Coils Base Polyfoam |
Joma Wool Gel Memory Foam Latex Memory Foam |
Quilted Fabric |
Vienna Firm | 5.5 (Medium) | N/A | Pocketed Coils Base Polyfoam |
Joma Wool Gel Memory Foam Latex Memory Foam |
Quilted Fabric | |
Vienna Euro Top | 4 (Medium Soft) | N/A | Pocketed Coils Base Polyfoam |
Joma Wool Gel Memory Foam Latex Memory Foam Microcoils |
Quilted Fabric | |
iMattress | G10 Firm | 5.5 (Medium) | N/A | HD Polyfoam | Memory Foam | Fabric Infused with Copper Yarns |
G12 Plush | 4 (Medium Soft) | N/A | HD Polyfoam | Memory Foam | Fabric Infused with Copper Yarns | |
XS 10 Hybrid Firm | 5.5 (Medium) | N/A | Pocketed Coils (630 Coil Count) | Memory Foam | Fabric Infused with Copper Yarns | |
XS 50 Hybrid Plush | 4 (Medium Soft) | N/A | Pocketed Coils (630 Coil Count) | Memory Foam | Fabric Infused with Copper Yarns |
Availability
King Koil mattresses are exclusively sold through third-party retailers, and are not available for purchase on the King Koil website.
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Sleep Trial Through third-party retailer
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Shipping Shipping depends on retailer
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Warranty 10-25 years, depending on model
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Made In USA
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How is the Mattress Shipped?
King Koil mattresses are exclusively available for purchase at brick-and-mortar retail locations. Customers should defer to the delivery policy of the retailer where they purchase their mattress.
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Old Mattress Removal?
King Koil does not offer old mattress services. Customers should defer to the mattress removal policy of the retailer where they purchase their King Koil mattress.
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Full Shipping Details
King Koil mattresses are exclusively available for purchase at brick-and-mortar retail locations. Customers should defer to the delivery policy of the retailer where they purchase their mattress.
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Trial Period & Warranty Details
Trial Period and Guarantee
King Koil does not offer a sleep trial for mattress purchases. Buyers should defer to the sleep trial and return policy of the retail location where they purchase their mattress.
Warranty
King Koil offers variable warranty coverage depending on the selected mattress model.
- The following mattresses include a 10-year nonprorated warranty:
- Siena Firm
- Sydney Firm
- Monaco Plush
- Monaco Euro Top
- Kingsley Firm
- Kingsley Plush
- Kingsley Euro Top
- Montego Luxury Firm
- Montego Luxury Plush
- Montego Luxury Pillow Top
- The following mattresses include a 25-year warranty; coverage is divided into 15 years of nonprorated coverage and 10 years of prorated coverage. Prorated charges are not listed.
- Athens Plush
- Athens Firm
- Warranty coverage length is not disclosed for the following mattresses:
- Sydney Euro Top
- Vienna Firm
- Vienna Plush
- Vienna Euro Top
- XS 10 Hybrid Firm
- XS 50 Hybrid Plush
- G10 Firm
- G12 Plush
- King Koil will, at their sole discretion, choose to repair or replace all mattresses that are deemed defective. Owners will be responsible for all transportation, labor, and handling charges associated with mattress repairs or replacements, or the cost of replacing a mattress if it occurs during a prorated coverage period (whatever is the cheapest option).
- The warranty will cover the following product defects:
- Visible sagging or indentations that measure a half-inch (1/2″) or deeper in the sleep surface of a mattress with a 25-year warranty; or measure one and a half inches (1 1/2″) or deeper in the sleep surface of a mattress with a 10-year warranty.
- Mattress coils that are broken or protruding through the fabric.
- The warranty will not cover the following:
- Indentations or sagging that measure less than a half-inch (1/2″) in the sleep surface of a mattress with a 25-year warranty; or less than one and a half inches (1 1/2″) in the sleep surface of a mattress with a 10-year warranty. Additionally, normal increases in mattress softness that do not affect its pressure-relieving abilities. These issues are all considered standard wear and tear.
- ‘Bent border wires’ that have become misshapen since the mattress was delivered.
- Repair or replacement requests that occur due to changes in the owner’s height or comfort preferences.
- Burns, cuts, tears, stains, and other types of physical damage that occur due to owner misuse, improper cleaning, and/or inadequate foundational support.
- Torn handles, damages sides, and other types of wear that occur due to the mattress being carried after its initial delivery.
- Warranty coverage is exclusively extended to original owners who purchase their mattress directly from King Koil or one of the company’s authorized retailers. Those who buy or acquire their mattress from the original owner or an unauthorized retailer will do so as is, and will not be eligible for warranty protection.
- The following mattresses include a 10-year nonprorated warranty:
Company Information
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Customer Service
6 out of 10 owner experiences show that customers have had a positive experience with King Koil, irrespective of whether or not they liked their mattress.
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BBB Rating
A+
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Company History
King Koil was founded in 1898. The company was sold to Kaiserkorp Corporation, a Malaysia-based company, in 2015.
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Physical Stores
King Koil does not operate any brick-and-mortar company showrooms, but their mattresses are available at retail locations nationwide.
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Contact King Koil
Corporate Address:
7501 S Quincy St
Willowbrook, IL 60527-8427Online form | 1-800-525-8331 | kingkoil.com
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