Casper One Foam vs Amerisleep AS1

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

The AS1 is our firmest mattress, it offers gentle-but-firm support that stays cool all night. It's a great choice for back and stomach sleepers who like extra support.

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.

Two layer construction:

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

* 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 foam is also better than traditional memory foam because it recovers its shape faster. With a typical foam mattress, you often wind up "stuck" when you change positions but the mattress is still holding your previous shape. That's because it takes around 60 seconds for the foam to bounce back.
Ours bounces back in just four seconds, so as you move at night your mattress keeps up with you, providing superior comfort.

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

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 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.

Our Bio-Pur® foam is five times more breathable than traditional memory foam, because of its advanced open-cell structure. It wicks away heat while you sleep and can help keep you cool and comfortable.

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

Bio-Pur® breathes and conforms to your body. When you lie down, you'll feel Bio-Pur® relieve your pressure points.

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.

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

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.