Spring Air Mattress Protector, King 80% Cotton/ 20% Polyester Terry Cloth Imported Machine Washable Warm, Tumble Dry Low Heat Great For Asthma, Eczema and Allergy Sufferers Waterproof Protection Fitted Sheet Style Design with Elastic Band for a Perfect Fit Our Moisture Shield Technology is Completely Noiseless and will Not Change the Feel of Your Mattress