Constructed with 2” orthopedic foam for maximum comfort are covered with a soft anti allergen barrier that along with being waterproof is flea, mite, and tick resistant. The base is covered with anti-skid materials to prevent slips and injuries. Choose from three fun summery colors from Sunbrella. These covers are durable enough that they can handle being cleaned with bleach, but most stains will come out with soap and water and a brush. Sunbrella fabrics have a 5 year warranty on the fade resistance.