The Naturepedic Organic Cotton Classic 252 offers premium support combined with a more natural, healthy and comfortable sleep environment. With 252 coils, edge support, organic cotton throughout, and a firm easy-to-clean non-toxic waterproof surface, the Organic Cotton Classic 252 is an excellent choice for parents seeking to eliminate potentially harmful chemicals and allergens. Naturepedic is a GOTS certified organic mattress manufacturer and has earned the trust of parents and doctors across the country. Naturepedic also meets the strictest GREENGUARD certification standards for eliminating chemical emissions. Winner of numerous awards and prestigious endorsements, Naturepedic organic crib mattresses are simply the healthiest available. Wipe clean waterproof surface so pure it meets food contact standards Patented food-grade 100% polyethylene waterproof surface is made without harmful chemicals and keeps fluids out (unlike many wetproof or water resistant PFC treated fabrics). Provides the ultimate stain resistant waterproof surface and a safer alternative to vinyl/PVC. Certified organic cotton fabric & filling Organic Cotton is an ideal material that is both natural and renewable. It is a healthier alternative to chemically treated foams and allergy-prone latex. All Naturepedic mattresses feature Certified organic cotton to provide a healthy, comfortable sleep environment. Firm and comfortable 252 coils plus edge support Heavy-duty orthopedic innerspring and firm, flat surface provide ideal support in accordance with pediatrician and Consumer Product Safety Commission (CPSC) firmness recommendations. Heavy duty border rods add strong side and edge support. Allergy-friendly design free from harmful chemicals Dust Mite/Bed Bug Barrier – No need for an additional dust mite encasingNo Latex or Soy – No need to worry about these high allergy materialsNo vinyl/PVC, phthalates, antimony, brominated or chlorinated fire retardants, Polyacrylonitrile (PAN), boric acid, polyurethane foam (including soybean foam), PFCs or antibacterial/biocide treatments. Fits all standard size crib and toddler beds Measures 27.75? x 52? x 6?. Square corners for a snug fit. Heirloom quality with lifetime limited warranty. Made in the U.S.A. This product is covered by U.S. Patent No. 9,259,096. Other patents pending.