Naturepedic Breathable Organic 2-Stage Baby Crib MattressWith 360 degrees of airflow, Naturepedic makes what may be the only certified organic, waterproof and breathable crib mattresses in the world. The removable breathable and washable layer is also a built in mattress protector. Made from safer, healthier materials such as 100% GOTS certified organic cotton. Waterproof surface made from non GMO sugarcane. 100% Vegan. No glues or adhesives, no polyurethane foam, passes flame standards without fire