King Koil offers innerspring, hybrid, and memory foam mattresses. A total of 20 mattresses are available as part of five exclusive collections.
The World Edition collection includes the following five innerspring models:
The Siena Firm features a comfort layer made of polyfoam. The support core features pocketed coils, followed by a polyfoam base layer. The quilted cover is infused with gel foam.
The Sydney Firm is designed with a polyfoam comfort layer and a pocketed coil support core reinforced with a polyfoam base layer. The quilted cover is infused with gel foam.
The Sydney Euro Top is constructed with a polyfoam comfort layer. The support core features pocketed coils over a polyfoam base layer, and the quilted cover is infused with gel foam.
The Monaco Plush has a polyfoam comfort system. The support core features pocketed coils reinforced with gel memory foam in the center, as well as a polyfoam base layer. The quilted cover is infused with gel foam.
The Monaco Euro Top has a polyfoam comfort system with an additional ‘lumbar support’ bottom layer. The pocketed coil support core is reinforced with gel memory foam in the center, and supported with a polyfoam base layer. The cover is quilted and infused with gel foam.
The following six mattresses are part of the World Luxury collection. The Kingsley models are innersprings, and the Montego models are listed as hybrids.
The Kingsley Firm features layers of memory foam and polyfoam in the comfort layer. The support core is constructed with foam-encased pocketed coils and a polyfoam base layer. The cover is blended from silk and wool and infused with gel foam.
The Kingsley Plush is designed with layers of memory foam and polyfoam in the comfort system. The support core features pocketed coils with a foam encasement, followed by a polyfoam base layer. The cover is blended from silk and wool and infused with gel foam.
The Kingsley Euro Top features a comfort layer made of memory foam with two insert layers of polyfoam. The support core has pocketed coils encased in foam, followed by a polyfoam base layer. The cover is blended from silk and wool and infused with gel foam.
The Montego Luxury Firm has a comfort layer with layers of memory foam, gel memory foam, and polyfoam. The support core features pocketed coils encased in foam, and the cover is a silk and wool blend infused with gel foam.
The Montego Luxury Plush is designed with a memory foam comfort layer and a pocketed coil support core encased in foam. The cover is made of a silk-wool blend infused with gel foam.
The Montego Luxury Pillow Top features a comfort system with layers of gel memory foam and polyfoam, as well as memory foam inserts. The support core is constructed with foam-encased pocketed coils, and the cover is made of a silk and wool blend infused with gel foam.
The next two hybrid mattresses are sold as part of the World Extended Life collection:
The Athens Firm has a comfort system with a layer of Talalay latex buffered with top and bottom layers of high-density polyfoam. The pocketed coil support core is encased in foam, and the fabric cover is infused with gel foam.
The Athens Plush has a top layer of high-density polyfoam and a bottom layer of Talalay latex in the comfort system, and a pocketed coil support core encased in foam. The fabric cover is infused with high-density foam.
These three hybrid mattresses are part of the World Luxury Intimate collection:
The Vienna Plush has a comfort system with layers of Joma wool, gel memory foam, latex, and memory foam. The pocketed coil support core is encased in foam.
The Vienna Firm features a comfort system with Joma wool, gel memory foam, latex, and memory foam layers. It also has a pocketed coil support core encased in foam.
The Vienna Euro Tophas layers of Joma wool, gel memory foam, latex, memory foam, and microcoils. The support core features pocketed coils encased in foam.
The final four mattresses are included in the iMattress collection. The G10 Firm and G12 Plush are memory foam mattresses, and the XS 10 Hybrid Firm and XS 50 are hybrid mattresses.
The G10 Firm features a memory foam comfort layer and a high-density polyfoam support core. The cover is infused with copper yarns.
The G12Plush features a memory foam comfort system and a support core constructed from high-density polyfoam. The fabric cover is infused with copper yarns.
The XS 10 Hybrid Firm is designed with a memory foam comfort layer and a pocketed coil support core. The fabric cover is infused with copper yarns.
The XS 50 Hybrid Plush features a memory foam comfort layer, a pocketed coil support core, and a fabric cover infused with copper yarns.
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.
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.
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.
What You Need to Know About the King Koil Mattress
Sizing and Pricing
Twin$549 - $1,399
Twin XL$599 - $1,589
Full$599 - $1,674
Queen$699 - $3,199
King$1,099 - $3,699
Cali King$1,099 - $2,399
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
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.
Sleep Trial Through third-party retailer
Shipping Shipping depends on retailer
Warranty 10-25 years, depending on model
Made In USA
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.
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.
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.
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.
Company Information
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.
BBB Rating
A+
Company History
King Koil was founded in 1898. The company was sold to Kaiserkorp Corporation, a Malaysia-based company, in 2015.
Physical Stores
King Koil does not operate any brick-and-mortar company showrooms, but their mattresses are available at retail locations nationwide.
Contact King Koil
Corporate Address: 7501 S Quincy St
Willowbrook, IL 60527-8427
