Naturepedic's No-Compromise Organic Cotton Lightweight crib mattress is designed to provide a healthy, natural sleep environment for babies. Mattress features non-toxic fire protection. Premium waterproof top with organic cotton filling provides long-lasting durability. Organic cotton surface is 100% food grade Polyethylene waterproof cover. Polyethylene is an environmentally friendly, PVC-free plastic that provides the ultimate non-toxic and stain resistant waterproof surface. Safety first - GREENGUARDr Certified - Hypoallergenic - Non-toxic fire protection - Polyurethane-, vinyl-, PVC- and phthalate-free - Meets or exceeds all U.S. government safety standards Details, details - Lightweight - Waterproof, seamless construction - Fits our entire collection of cribs - Made in USA Show 'em what you're made of - Wavesupport, made from pure food-grade polyethylene, provides excellent support and durability - Certified organic cotton filling