SafeRest Premium Mattress Protectors Provide Undetectable Protection for You and Your Family Protects against perspiration, urine and fluids SafeRest Premium Mattress Protectors offer protection against fluids, urine, perspiration and making them especially helpful for those with kids, pets or incontinence. SafeRest mattress protectors trap skin cells on the surface of the protector where they can be easily washed away during suggested quarterly launderings. This helps provide a cleaner environment for you and your family. 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 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 Washable Machine-wash with your sheets using normal household detergents that do not contain bleach. Tumble dry on low heat. Do not iron. SafeRest Invisa-Shield™ Our mattress protectors will not change the feel of your mattress. This is great for those with any type of mattress including innerspring, latex or memory foam. All SafeRest Mattress Protectors contain no phthalates, vinyl or PVC's.