Features a luxurious organic cotton fabric with a clear 100% polyethylene food-grade waterproof coating. Allergen friendly and easy-to-clean. Features Air-Core, made from food-grade polyethylene. Air-Core is a network of closed cell air pockets that provide a firm and comfortable base without polyurethane foam and the allergenic concerns of latex rubber. Due to our innovative natural design and intelligent mattress construction, Naturepedic passes all Federal and State flammability standards without the use of flame retardant chemicals or barriers. This is achieved through superior product design and the use of more natural materials. Made in USA with domestic components and imported fabric and components.