Goza Bedding Mattress Protectors offer protection against dust mites, fluids, urine, perspiration and allergens making them especially helpful for those with kids, pets, allergies or incontinence. Soft Cotton Terry Surface - Breathable, Cool and Noiseless; To keep our protectors cool and noiseless, the surface material is made with soft cotton terry back coated with a breathable, hypoallergenic and 100% waterproof membrane layer. Cotton terry naturally absorbs moisture and is completely noiseless. Fitted Sheet Style to ensure a great fit, an elastic band is used on the side skirt to automatically pull excess material under the mattress. Machine-wash with your sheets using normal household detergents that do not contain bleach. Tumble dry on low heat. Do not iron. Our Customer Satisfaction Money-Back Guarantee If you are not satisfied with the Goza products just return them within 30 days for a full refund. No questions asked, no hassle.