Cotton,velvet Imporrtant Notice:Please Dry The Floor Mattress Under The Sun Firstly,It Will Be Recovered More Quickly In The Sunshine.please Kindly Be Noticed That We Compress This Item Into A Handy Storage Bag,So It Needs 2-3 Days To Restore The Normal Thickness After You Open The Package Wide Versatility:It Can Be Used As Camping Mattress | Bedroom Futon | Living Room Futon | Tatami Mat | Floor Mattress | Sleeping Floor Mat | Tent Mat | Guest Bed | Foldable Couch | Japanese Bed Mat,Also Can Be