The Organic Cotton Waterproof Fitted Crib Pad is made with all natural soft, unbleached non-toxic cotton to protect your baby's health and keep him or her sleeping safe and sound through the night. This crib mattress cover is even hypoallergenic. Plus, the Four Layer Protection offers completely breathable waterproof mattress protection. This powerful fitted crib pad cover features a polyester fiber layer that absorbs liquid and a breathable waterproof layer that guarantees zero liquid penetration. Machine wash warm, mild detergent, tumble dry low.