Casper vs. Amerisleep Mattress Comparison

Our Review Process | Disclosure

 

The Tuck team collected and analyzed 15,907 verified customer experiences from 69 unique sources and spent over 30 hours testing these mattresses in our lab for this review. This research is supported by you, our readers, through our independently chosen links, which earn us a commission. Read more about how we’re supported here.

Quick Summary – Casper vs. Amerisleep AS3

Casper launched in 2014. The brand’s flagship bed, the Casper, is made with a triple-layer polyfoam and memory foam comfort system, as well as a high-density polyfoam base layer. The mattress is considered ‘Medium’ in terms of firmness, or a 5.5 on the 1-10 firmness scale.

Amerisleep has been in business since 2007. The AS3 (formerly known as the Liberty) is included in the brand’s current line of memory foam mattresses. This model has a memory foam comfort layer, a dual-layer polyfoam support core, and a cover made of Celliant fabric, polyester, and spandex. The AS3 is considered ‘Medium’ (5.5) in terms of firmness.

Please note: Both Casper and Amerisleep offer other mattresses in addition to the models listed above:

  • Casper sells two other beds: the Casper Essential, a memory foam mattress; and the Casper Wave, a memory foam and latex mattress.
  • Amerisleep offers four other memory foam mattresses, each with a different firmness: the AS1 (7.5), AS2 (6.5), AS4 (4.5), and AS5 (3.5).

This page will exclusively compare the Casper and AS3 mattresses. For more information about other beds from these brands, please visit our Casper Mattress Reviews and Amerisleep Mattress Reviews pages.

The Casper and AS3 mattresses share the same ‘Medium’ (5.5) firmness, as well as other attributes including close body conforming and above-average motion isolation. However, they also differ in terms of other factors such as price-point and temperature neutrality. This guide will compare the unique pros and cons of each mattress, as well as the individual policies and overall reputations of both companies.

Casper mattresses are great for…

  • Sleepers who prefer a ‘Medium’ mattress that provides close conforming
  • Those who frequently experience pain and pressure in their lower back and other sensitive areas
  • Couples

 

Receive $50 off your Casper mattress purchase with this code: TUCK50

Amerisleep

AS3 mattresses are great for…

  • Sleepers who prefer ‘Medium’ firmness
  • Those needing pressure relief when side-sleeping, but with strong support to keep your spine aligned
  • People who normally sleep hot on all-foam beds

 

Tuck readers can purchase an AS3 mattress at the lowest price

Casper vs. Amerisleep AS3: Mattress Details & Ratings

MODEL Description
The Casper
Foam
Medium
Moderate
Good for Back Pain
Back
Full mattress details

Mattress Specs

  • 5.5
  • 100 night
  • 10 Year, Limited
  • online, in-store
  • 71 lbs
  • Foam
  • $995.00/Queen
  • Free

Sleep Rating

Durability
Fair

Owners report that Casper models perform fairly well after long-term use, but the company has only been in business for three years and it may be too early to accurate gauge the lifespan of these mattresses.

Motion Isolation
Very Good

The Casper mattress absorbs and minimizes motion to a significant extent, according to owners.

Conforming
Good

The Casper offers comfortable conforming and targeted pressure relief.

Sex
Fair

Our testing indicates that The Casper isn't particularly responsive or bouncy given it's construction so is just ok for sex which is on par with most mixed foam mattresses.

Temperature Neutrality
Good

Casper mattresses absorb minimal body heat and sleep fairly cool compared to other memory foam mattresses.

Off-gassing
Fair

Some Casper owners report moderate off-gassing when the mattress is new.

Edge Support
Fair

The Casper offers minimal edge support and sinkage aorund the perimeter is likely over time.

Noise
Excellent

Casper mattresses are virtually silent when bearing weight.

AS3
Foam
Medium
Moderate
Good for Back Pain
Back
Full mattress details

Mattress Specs

  • 5.5
  • 100 night
  • 20 Year - 1st 10 Year unlimited, 2nd 10 Year pro-rated
  • online, in-store
  • 88 lbs.
  • Foam
  • 1,199.00/Queen
  • Free

Sleep Rating

Durability
Very Good

Amerisleep AS3 mattresses tend to degrade faster than average for the memory foam mattress type.

Motion Isolation
Very Good

AS3 mattresses absorb and minimize motion transfer to a significant extent.

Conforming
Very Good

The AS3 is less firm and conforms quite closely for targeted pain and pressure relief.

Sex
Fair

The AS3 is softer and not very bouncy, and may not be responsive enough for couples.

Temperature Neutrality
Good

AS3 mattresses have covers blended with celliant fabric that allows the bed to sleep relatively cool for most.

Off-gassing
Very Good

Minor off-gassing odors have been reported for AS3 mattresses, but these smells usually dissipate quickly.

Edge Support
Good

The AS3 offers stronger edge support than many of its all-foam competitors, due in part to its thick polyfoam support core.

Noise
Excellent

AS3 mattresses are virtually silent when bearing weight.

Sizes and Pricing

First let’s compare prices of the Casper and AS3. The table below lists current price-points for both mattresses in each available size. Please note that only the AS3 is available in a Split King size.

Size Casper AS3
Twin $595 $899
Twin XL $645 $949
Full $895 $1,049
Queen $995 $1,199
King $1,195 $1,499
Split King N/A $1,898
California King $1,195 $1,499

Mattress Construction

Now let’s see how the Casper and AS3 are made. The next table lists firmness, thickness, weight, and composition specs for both mattresses.

Specification Casper AS3
Firmness 5.5 (Medium) ‘Medium’ (5.5)
Thickness 9 1/2″ 12″
Weight (Queen) 71 lbs. 88 lbs.
Support Core Components 5″ 1.8 PCF HD Polyfoam 2″ 1.65 PCF Polyfoam
7″ 1.8 PCF HD Polyfoam
Comfort Layer Components 1 1/2″ Polyfoam
1 1/2″ 4 PCF Memory Foam
1 1/2″ 2 PCF Polyfoam
3″ 4 PCF Memory Foam
Cover Composition 100% Polyester 77% Polyester
21% Celliant Fabric
2% Spandex

How is the Casper built?

The Casper has three comfort layers – top and bottom polyfoam layers with a middle memory foam layer – that create a ‘Medium’ feel that provides close body conforming. Its single-layer support core is constructed from high-density polyfoam. This layer reinforces the bed and helps maintain an even sleep surface. The mattress has a 9 1/2″ thickness profile, which is slightly shorter than average.

A Queen-size Casper mattress weighs roughly 71 pounds. This is exceptionally light even by all-foam mattress standards, making the bed relatively easy to lift and rotate as recommended.

How is the Amerisleep AS3 built?

The AS3 is a memory foam mattress with a 3″ comfort layer of 4 PCF foam. This material conforms closely with ‘Medium’ firmness. The bed’s cover is made of polyester blended with Celliant fabric, which helps the mattress absorb less body heat from sleepers and feel relatively cool as a result.

The AS3 has a thick support core consisting of a 2″ transitional polyfoam layer and a 7″ high-density polyfoam base. These layers reinforce the bed very well, helping to maintain a flat, even surface and help the mattress withstand sinkage around the edges better than other all-foam models. A Queen-size AS3 weighs 88 pounds, which is slightly heavier than average, making the bed somewhat difficult to lift and rotate compared to the average all-foam mattress.

Sleep Position Ratings

SLEEP POSITION LIGHT WEIGHT
Less than 130 LBS
AVERAGE WEIGHT
130 LBS - 230 LBS
HEAVY WEIGHT
Greater than 230 LBS
The Casper
Side
LIGHT WEIGHT
Less than 130 LBS
Side
VERY GOOD
AVERAGE WEIGHT
130 LBS - 230 LBS
Side
VERY GOOD
HEAVY WEIGHT
Greater than 230 LBS
Side
GOOD
Back
LIGHT WEIGHT
Less than 130 LBS
Back
VERY GOOD
AVERAGE WEIGHT
130 LBS - 230 LBS
Back
VERY GOOD
HEAVY WEIGHT
Greater than 230 LBS
Back
GOOD
Stomach
LIGHT WEIGHT
Less than 130 LBS
Stomach
GOOD
AVERAGE WEIGHT
130 LBS - 230 LBS
Stomach
GOOD
HEAVY WEIGHT
Greater than 230 LBS
Stomach
FAIR
AS3
Side
LIGHT WEIGHT
Less than 130 LBS
Side
GOOD
AVERAGE WEIGHT
130 LBS - 230 LBS
Side
VERY GOOD
HEAVY WEIGHT
Greater than 230 LBS
Side
GOOD
Back
LIGHT WEIGHT
Less than 130 LBS
Back
VERY GOOD
AVERAGE WEIGHT
130 LBS - 230 LBS
Back
VERY GOOD
HEAVY WEIGHT
Greater than 230 LBS
Back
VERY GOOD
Stomach
LIGHT WEIGHT
Less than 130 LBS
Stomach
VERY GOOD
AVERAGE WEIGHT
130 LBS - 230 LBS
Stomach
GOOD
HEAVY WEIGHT
Greater than 230 LBS
Stomach
GOOD

Casper Sleeper Ratings

The Casper is considered ‘Medium’ (5.5) in terms of firmness. This feel is optimal for sleepers in the average weight group (130 to 230 pounds), and may also provide adequate conforming for lighter individuals. The mattress also isolates motion transfer very well and produces no noise when bearing weight, making it a good option for couples.

Amerisleep AS3 Sleeper Ratings

Like the Casper, the AS3 offers ‘Medium’ (5.5) firmness that balances body conforming and sleeper support. This setting is optimal for people who weigh between 130 and 230 pounds, and may also be suitable for lighter individuals; its thicker profile may be suitable for heavier people, as well. Edge support is another key strength; the AS3 is less susceptible to sinkage around the perimeter than many of its all-foam competitors. Other advantages include good motion isolation, no noise, and relatively cool sleep due to the Celliant-blended cover.

Sleep Trials, Warranty, and Delivery

Casper

Sleep trial 100 nights
Refund Full
Warranty 10 years, nonprorated
Where do they ship? Anywhere in the U.S. and Canada
Trial period, warranty, and delivery details

Trial Period and Guarantee

Casper offers a 100-night sleep trial for the Casper mattress.

  1. This sleep trial does not include a mandatory break-in period; customers may return their mattress for a full refund at any point during the 100-night trial.
  2. In the event of a return, Casper will coordinate free mattress pickup from the customer’s residence.
  3. Casper offers full refunds to customers who buy their mattress directly from the company; those who purchase their Casper on Amazon.com or through other third-party retailers may need to pay additional charges.
  4. Casper offers mattress exchanges during this trial. The remaining trial period will be cancelled for exchanges for different mattress sizes or colors, but a new trial period will begin if the bed is exchanged for a different Casper model.

Warranty

Casper offers a 10-year nonprorated warranty:

  1. This warranty is entirely nonprorated.
  2. Casper will void the warranty if the mattress is not used with a firm, supportive foundation.
  3. Casper pays all shipping costs for repairing or replacing defective mattresses.
  4. The warranty will cover the following defects:
    • Sagging or indentations in the sleep surface measuring 1″ or deeper.
    • Physical flaws that cause mattress materials to split or crack.
    • Cover zipper defects.
  5. The warranty will not cover the following:
    • Sagging or indentations in the sleep surface measuring less than 1″ deep.
    • Burns, cuts, tears, stains, and other forms of physical damage resulting from misuse.
    • Repair or replacement requests that occur due to changes in the owner’s comfort preferences.
  6. This warranty is non-transferable, and is exclusively available to original owners who purchase the mattress from Casper or an authorized retailer. Those who buy or acquire the mattress from the original owner or non-authorized sellers will not qualify for warranty coverage.

Delivery Policy

The delivery policy for Casper mattresses is as follows:

  1. Most customers receive their mattress within two to seven business days of placing their order.
  2. In addition to free standard delivery through UPS, Casper offers White Glove delivery. This service includes in-home mattress assembly and old mattress removal upon request, and is available for a flat $149 fee.

How Is the Mattress Shipped?: Compressed and shipped in a box.
Where Do They Ship?: Anywhere in the U.S. and Canada.
Delivery Fee: Standard delivery is free; White Glove delivery is $149.

Old Mattress Removal

Old mattress removal is included with White Glove delivery upon request at no additional charge beyond the flat $149 charge. However, old mattress removal is not offered with standard deliveries.

Amerisleep

Sleep trial 100 nights
Refund Full
Warranty 20 years, partially prorated
Where do they ship? All 50 states and Canada
Trial period, warranty, and delivery details

Trial Period and Guarantee

Amerisleep offers a 100-night sleep trial for the AS3 mattress.

  1. This sleep trial includes a mandatory 30-night break-in period. Full refunds will not be issued until the customer tests out the mattress for at least 30 nights.
  2. In the event of a mattress return, Amerisleep issues a full refund and arranges for the mattress to be picked up from the customer’s residence at no extra cost.
  3. This sleep trial is extended to customers who purchase their Amerisleep AS3 mattress on Amazon.com.

Warranty

Amerisleep offers a 20-year warranty for the AS3:

  1. This warranty is partially prorated. During the first 10 years of ownership, Amerisleep will repair or replace mattresses with defects at no extra charge to the owner. During years 11 to 20, Amerisleep will replace defective mattresses for 50% of the original product price; owners are also responsible for mattress shipping and transportation costs during this prorated period.
  2. The warranty will be voided if the mattress is not used with a solid wood, non-spring, completely flat foundation or bed platform. Additionally, box springs must be used with at least three-quarters of an inch (3/4″) of plywood, and bases cannot have slats that are more than three inches (3″) apart.
  3. The warranty will cover the following defects:
    • Sagging or indentations in the sleep surface measuring three-quarters of an inch (3/4″) or deeper.
  4. The warranty will not cover the following:
    • Sagging or indentations in the sleep surface that do not measure three-quarters of an inch (3/4″) or deeper.
    • Burns, cuts, tears, stains, and other types of physical damage that occur due to misuse or neglect.
  5. This warranty is non-transferable. It is exclusively offered to original owners who purchase their AS3 mattress from Amerisleep or an authorized retailer. Those who buy or acquire their mattress from the original owner or a non-authorized retailer will not be eligible for warranty coverage.

Delivery Policy

The delivery policy for AS3 mattresses is as follows:

  1. Amerisleep mattresses typically ship within three to five business days of the original order; once shipped, they reach their destination in one to five additional business days.
  2. Free shipping is available to customers in the contiguous U.S. Those ordering from Alaska, Hawaii, or Canada can contact Amerisleep to learn about their current shipping rates.
  3. All Amerisleep deliveries are coordinated through FedEx Curbside Delivery; a customer signature is not required.

How Is the Mattress Shipped?: Compressed and shipped in a box.
Where Do They Ship?: All 50 states, as well as select locations in Canada.
Delivery Fee: Shipping is free for all orders in the contiguous U.S., but additional charges will be applied for deliveries to Alaska, Hawaii, and Canada.

Old Mattress Removal

Amerisleep does not provide old mattress removal.

Our Recommendations

Choose the Casper if...
  • You want a mattress with ‘Medium’ firmness that conforms somewhat closely
  • You prefer low-profile beds
  • You and/or your sleep partner awaken easily due to noise or movement
  • You weigh 230 pounds or less
The Casper may not be suitable if...
  • You want a firmer mattress that offers minimal conforming
  • You weigh more than 230 pounds
Choose the Amerisleep AS3 if...
  • You want a mattress with ‘Medium’ firmness that conforms somewhat closely
  • You usually sleep hot on all-foam beds
  • You prefer higher-profile beds
  • You weigh 230 pounds or less
The AS3 may not be suitable if...
  • You want a firmer mattress that conforms less
  • You prefer low-profile to average-profile beds

Additional Information

Choosing the right mattress for you can be a difficult decision. Tuck.com strives to help mattress shoppers evaluate different models and decide which product best meets their needs and preferences. To learn more about how we compare products, please visit our Mattress Methodology page.