360 degrees of airflow ensures baby can breathe even when face down. Naturepedic makes the only breathable + waterproof + organic crib mattresses in the world. Removable machine-washable layer is a built-in mattress protector. Lightweight or innerspring options. Made from safest & healthiest materials on Earth. 100% GOTS certified organic cotton. Non-Toxic waterproof layer made from non-GMO sugarcane, 100% Vegan. No glues or adhesives, no polyurethane foam, passes flame standards without fire retardants or chemical additives.