Waterproof Mattress Encasement Material: 100% Polyester Waterproof Quilted Design Deep Pocket Fits All Mattresses up to 16”Deep One Box Contains 6 Pcs Size Available:Twin 39″ x 75″ +12″Twin XL 39″ x 80″ +12″Double 54″ x 75″ +14″Queen 60″ x 80″ +14″King 78″ x 80″ +14