Twin XL Assure Sleep Mattress Protector - 100 % Waterproof - Breathable Soft Cotton Terry Cover &ndash; Hypoallergenic - 10 Year Warranty Cotton 100% Waterproof -Hypoallergenic- Top protection against perspiration, bed wetting, Allergens, Bacteria, Dust Mites, Mold and Mildew Ideal for Asthma & Allergy Sufferers, Doctor Recommended Cotton Terry Mattress Protector - fitted sheet style  Elasticized knitted skirt fits mattress up to 18" Stays Cool, Breathable super soft smooth surface. Soft & Silent thin sleep surface, wont change feel of your mattress, Vinyl Free. Machine Washable, 10 Year Warranty