From Boyd Specialty Sleep, this 12" Sure Sleep 1200 Series Memory Foam Twin Mattress has a removable washable plush Eco-Friendly cover made of 100% Rayon Fabric that is made from sustainable bamboo fiber. The natural wicking ability of bamboo fiber pulls moisture away from your skin, keeping you comfortable all night long. Solid 2" pressure sensitive memory foam molds to your individual shape to provide increased circulation and gentle support. A layer of convoluted high density foam coupled with the Reflexa high density foam base provides long lasting durability and support.