The Organic waterproof natural quilted fitted crib and toddler bed protective mattress pad cover has a top layer of soft organic cotton interlock. Middle layer is 100% breathable polyester, and the back layer is waterproof breathable polyester. The pad measures 24" X 38" X 9" fits standard size crib mattresses. Can be machine washed cold water with like colors, mild detergent, gentle cycle, can use non chlorine bleach if necessary.