The Naturepedic Classic Organic Baby Crib Mattress features organic cotton fabric & filling as part of a healthier, non-toxic design plus a patented food-grade waterproof surface made from non-GMO sugarcane that easily wipes clean. Our innovative construction also passes all federal and state flammability standards without any fire retardant chemicals or flame barriers whatsoever. In addition to using certified organic components, the entire crib mattress is certified organic and non-toxic as well. Choose an innerspring for a traditional support option or our patented lightweight core which matches the strength and durability of an innerspring but without the added weight. With the Naturepedic Classic Organic Baby Crib Mattress, your baby will be sleeping on a firm, healthy certified organic mattress that's fully waterproof for a truly hygienic sleep environment.