It’s 80% cotton- 20% Terry polyester cloth blend surface that provides comfort and absorbancy. It has a special breathing (polyurethane) film on the back, which allows heat and moisture to breathe through while blocking off besmirch, liquid, bacteria and other hype susceptibility materials from bed mattress. Features Material: Terry Cotton  Fabric Laminated With Polyurethane Waterproof Membrane Color: Grey. Available