Noctova Luxury Terry Top Waterproof Mattress Protector (Twin) 100% Waterproof Barrier protects against stains and liquid damage (10-Year Warranty) Hypoallergenic Terry Cloth Top is breathable and will keep your mattress comfortable with full protection. Luxurious Feel with Easy Care, Machine Washable (Fits up to 20" Deep) Extends the life of your mattress with quality protection. Proven Dust Mite & Allergen Protection - Great for those who suffer from Allergies!