Protect your family. This zippered mattress cover is designed for people suffering from Asthma, Eczema and other dust related allergies. The unique breathable waterproof membrane forms an effective barrier against dust mites, dust mite residue, and other harmful allergen particles. Polyester/Cotton fabric laminated to CleanAir urethane membrane. Stretch side-wall fits mattresses up to 15" deep. Five year warranty. Machine washable. Made in USA!