100% Water Impervious: Premium poly cotton Soft Terry Towel mattress protector super king size will protect your mattress against dust mites , Fluids, Urine, Perspiration and Allergens, Our Hypoallergenic Poly Cotton Terry Surface With Membrane Back Coating Is (100 % Water proof, Noiseless And Breathable Size Guidelines: Superking Mattress Protectors (W X 182, L X 200 +40cm Extra Deep Skirt) Free from Harmful chemicals: The OEKO-TEX Certified Terry Towel mattress Protector is constructed with vinyl – free material. Strong Elastic and 360° Snug Fit: Fitted Terry Towel Mattress Protector is - water proof super King sheet Style design with strong elastic all around, that can ensure to avoid bunch up or slip out of place. This full size mattress side skirt can perfectly fit mattresses height up to 16 inches/40cm. Easy to Clean & Long Lasting: Repeated washing and drying will not cause deformation of our premium elastic material or damage the specially designed waterproof membrane.