The Naturepedic Organic Cotton Lightweight Classic 2-Stage matches the strength and durability of an innerspring without the added weight in a 2-Stage dual firmness design. Layers of luxurious organic cotton batting create the perfect balance of firmness and comfort. Get the best of both worlds; firm and comfortable for baby and toddler with long lasting durability and easy crib changing for parents! At its core, this mattress is built with Naturepedic’?s exclusive patent pending wavesupport technology, made from pure food-grade polyethylene. 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. Waterproof seams Prevents moisture penetration for a more hygienic design and allows for easier cleaning. 2-Stage dual firmness Provides a firmer side for infants and a cushion firm side for toddlers. 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. Wavesupport technology Made from pure food-grade polyethylene, this exclusive Naturepedic innovation provides exceptional support and durability that rivals innersprings and premium foams. The wave structure achieves incredible strength with very little material, offering an ultra lightweight design that is both firm and comfortable. NO polyurethane! 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.