Tuft & Needle Twin Mattress, Bed in a Box, T&N Adaptive Foam, Sleeps Cooler with More Pressure Relief & Support Than Memory Foam, Certi-PUR & Oeko-Tex 100 Certified, 10-Year Warranty, Made in USA ADAPTIVE FOAM: Constructed with freshly poured T&N Adaptive foam, this mattress provides a bouncy yet supportive feel perfect for all sleeping positions. Our foam allows us to compress our mattress to fit into a small box and ships quickly HIGH QUALITY: Our high-grade foam is more advanced than outdated materials such as latex and memory foam which cause you to sink in and feel stuck and sleep hot." The T&N Adaptive foam sleeps cool, is just the right mix of not too soft, and not too hard, and offers great pressure relief and localized bounce so you wont disturb your sleeping partner. NO RISK: Mattress has a full refund guarantee with a 100-Night Sleep Trial, plus an honest 10-year limited warranty you can actually use (no gimmicks!). Over 95% of our customers keep their mattress and refer it to others NOTE: Please allow up to 72 hours for the mattress to fully expand and for any potential odor to dissipate