Inside the One Our signature all foam mattress designed with a responsive yet supportive medium-firm feel is perfect for any sleep style. 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. PRESSURE RELIEVING: Align Memory Foam cradles your body to help you stay asleep. SUPPORTIVE CORE: A firm Casper Core prevents sinking and sagging. While the Original & The Casper has gone to bed, you can experience the latest in cutting-edge coziness with our new mattress, the One. Don't Lose Sleep Free, no-contactdelivery* 100-nightrisk-free trial* 10-year limitedwarranty* Our latest iteration of the all foam mattress that broke the internet.
