Amerisleep AS3 vs Casper One Foam

The AS3 is our most versatile mattress. It evenly blends support and softness, so it's great for people who change positions as they sleep and couples with different sleep styles. It's also our most popular mattress overall.

This mattress has a supportive medium-firm feel with the perfect bit of bounce.

Three layer construction:

• Bio-Pur® foam
• HIVE® transition layer
• Bio-Core® foam support layer
• Refresh Cooling Cover.

Mattress shopping keeping you up ? Designed to be an all-in-one solution to nighttime woes, better sleep starts with One.

Designed to be an expensive mattress that's not expensive. The sweet spot between superior comfort and serious value.

While the Original & The Casper has gone to bed, you can experience the latest in cutting-edge coziness with our new mattress, the One.

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.

• Cozy Cover: A buttery soft and airy knit blend helps make your mattress even cozier.
• Responsive feel: A supportive medium-firm feel with the perfect bit of bounce.
• Breathable foams: Breathe Flex Foam allows airflow to soothe you to sleep. A responsive and breathable open cell foam soothes you to sleep with the perfect bit of bounce.

Our Bio-Core® foam support layer won't sag even after decades of use. And, like our Bio-Pur® foam, it's partially made from plants instead of petroleum so it's eco-friendly.
The HIVE® 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.

• Pressure relieving : Align Memory Foam cradles your body to help you stay asleep.
• Supportive core: A firm Casper Core prevents sinking and sagging.

The HIVE® 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-Pur® material features an advanced-open cell design. This makes Bio-Pur® more breathable and responsive than memory foam, which will keep you cool and comfortable all night. Plus we make Bio-Pur® from partially plant-based sources using a zero-emission process. That means it's the most eco-friendly material of its kind.

The innovative cooling system designed to help keep you cool all night. The top layer, Breathe Flex Foam that’s both responsive and breathable to soothe you to sleep with the perfect bit of bounce.

Bio-Pur® contours to your body to relieve pressure points and bounces back fast, so you won't feel "stuck" during the night.
Our HIVE® 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.

Casper signature all foam mattress designed with a responsive yet supportive medium-firm feel.

Refresh Cooling Cover
The Refresh Cover draws heat from your skin for a delightfully cool-to-the-touch feel. On average, your sleeping surface will stay 7 degrees cooler over an eight-hour night of rest compared to a traditional 100% polyester cover. This scientifically engineered fabric uses minerals to help convert your natural body heat into far infrared energy. This type of energy increases blood circulation to help speed up muscle recovery and improve quality of sleep.

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.

Free shipping and free returns, additional shipping fees apply to Alaska and Hawaii. Terms and Conditions apply.