Polyester Icetech fabric instantly cools down for comfortable sleep Lab-certified waterproof membrane blocks for liquids, allergens and dust mites Quiet and breathable screen goes over like a fitted sheet to protect the top and sides of the mattress Designed with deep pockets and a premium elastic for a soft, secure fit on any mattress Available in California King, Split California King, King, King, Queen, Split Queen, Full XL, Full, 2 XL, and 2 sizes