Amerisleep AS4 Mattress

Mattress Comparison

Brand Amerisleep
Mattress Type Memory foam
Prices Twin $1,449 $1,014
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Twin XL $1,499 $1,049
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Full $1,649 $1,154
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Queen $1,799 $1,259
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King $2,099 $1,469
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Cal King $2,099 $1,469
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Latest Promotions

Get 30% off mattresses plus two free pillows. Use coupon AS30 at checkout. Ends Sunday

See offer

Trial & Warranty

Trial Period
Trial Period (nights) 100
Warranty Length (years) 20

Firmness Options

One Firmness Fits All?
Adjustable Firmness
Flippable / Reversible Firmness
Half-Half Firmness
Selectable Firmness
Firmness Info The AS4 is our medium-soft mattress. It offers plush comfort with targeted support that helps you sleep your best. Plus it stays cool all night, making it our most popular model with side sleepers.

Mattress Construction

Materials Overview Three layer construction:
  • Bio-PurĀ® foam
  • HIVEĀ® transition layer
  • Bio-CoreĀ® foam support layer
  • CelliantĀ® cover.
Comfort Info Traditional memory foam is made from dense material, so it traps your body heat and can make you sweaty and uncomfortable while you're in bed - and who can sleep like that?
We developed our foam with an enhanced "open cell structure", which means there is more air space between the foam particles. That space wicks away heat while you sleep, and can keep you cooler and more comfortable.
Support Info Our Bio-CoreĀ® foam support layer won't sag even after decades of use. And, like our Bio-PurĀ® foam, it's partially made from plants instead of petroleum so it's eco-friendly.
The HIVEĀ® layer features hundreds of foam hexagons grouped into five comfort zones. Each zone is designed to provide extra cushion where you want it and support where you need it. That way your body gets the support it needs to stay properly aligned, so you can sleep your best.
Comfort Specs The HIVEĀ® transition layer has precision-cut channels that carry away even more heat and moisture. It's enough to make you feel like you're weightlessly resting on a cloud.
Amerisleep's Bio-PurĀ® material features an advanced-open cell design. This makes Bio-PurĀ® more breathable and responsive than memory foam, which will keep you cool and comfortable all night. Plus we make Bio-PurĀ® from partially plant-based sources using a zero-emission process. That means it's the most eco-friendly material of its kind.
Support Specs Bio-PurĀ® contours to your body to relieve pressure points and bounces back fast, so you won't feel "stuck" during the night.
Our HIVEĀ® transition layer provides targeted support and pressure relief so you can sleep in perfect alignment. It gives your head, back, and legs more support, and your shoulders and hips more cushion.
Fabric Specs High-Performance CelliantĀ® Cover
CelliantĀ® is an advanced fabric that is both soft and ultra-breathable to keep you sleeping your best each and every night.


Side Sleepers
Back Sleepers

Size & Weight

Twin Dimensions 38" x 74" x 12"
Twin Weight (lb) 56
Twin XL
Twin XL Dimensions 38" x 80" x 12"
Twin XL Weight (lb) 62
Full (Double)
Full Dimensions 54" x 75" x 12"
Full Weight (lb) 79
Queen Dimensions 60" x 80" x 12"
Queen Weight (lb) 92
King Dimensions 76" x 80" x 12"
King Weight (lb) 117
California King
California King Dimensions 72" x 84" x 12"
California King Weight (lb) 117


Manufactured in
United States
Number of other mattresses 4
Other mattresses
(Queen prices shown)
Amerisleep AS1 $1,299 $909
10" Memory foam
Amerisleep AS2 $1,399 $979
12" Memory foam
Amerisleep AS3 $1,499 $1,049
12" Memory foam
Amerisleep AS5 $2,199 $1,539
14" Memory foam
Sister sites or brands Vaya Sleep
Zoma Sleep
Sister mattresses
(Search by name to add to compare)
Vaya $899 $599
12" Foam
Zoma $949 $799
11" Memory foam
Zoma Hybrid $1,149 $999
12" Hybrid (coils and foam)

Certifications & Sustainability

CertiPur-US logo
Global Organic Textile Standard (GOTS)
Global Organic Latex Standard (GOLS)
USDA Organic
Rainforest Alliance Certifiedā„¢
Forest Stewardship CouncilĀ®
Certification Info


Delivery Cost FREE
Delivery Info

We provide standard free curbside shipping to anywhere in the contiguous USA. Mattresses ship as quickly as 3-5 working days (excluding major holidays) via FedEx, once shipped, delivery takes approximately 1-5 business days.

Current Promotions

Get 30% off mattresses plus two free pillows. Use coupon AS30 at checkout. Ends Sunday

See offer
PricesTwin $1,449 $1,014
[go to store]
Twin XL $1,499 $1,049
[go to store]
Full $1,649 $1,154
[go to store]
Queen $1,799 $1,259
[go to store]
King $2,099 $1,469
[go to store]
Cal King $2,099 $1,469
[go to store]

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