The baby bassinet mattress cover is made of 35% ice silk and 65% Polyester fabric creating a cooling feeling. Foam pad is made of 100% polyurethane. Extremely soft and smooth to touch. It has a zipper so you can easily remove the cover for machine washing. The baby bassinet mattress cover is made of premium TPU waterproof membrane, it is waterproof on both sides. That repels all other liquids, including fluids, perspiration, bed wetting, and stains. ** No signs of usage. Purchased a while back thinking it was an adult size mattress. It has been kept in storage.