The Naturepedic Organic Cotton Ultra 2 in 1 will grow with your child for many years while providing a more natural, healthy and comfortable sleep environment. The 2 in 1 design features an easy to clean waterproof side for younger children that protects the inner core of the mattress from moisture while also functioning as a dust mite barrier. The bottom quilted side offers a luxurious cushion firm feel that will last your child for many years. Makes an excellent choice for parents seeking a versatile children’s mattress without 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. TOP – 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. BOTTOM – Luxuriously Quilted Organic Cotton Fabric Offers a cushion firm mattress feel that will last your child for many years. 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. Comfortable medium-firm feel plus strong edge support Heavy-duty orthopedic innerspring provides ideal support for children (twin 360 coils, full 528 coils). 6 gauge border wire adds 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. Matching foundations Available in 7 standard and 4 low profile versions (made with FSC certified wood). Standard twin & full sizes Twin measures 38? x 75? x 8?, Full measures 53? x 75? x 8? Twin also available as a low profile trundle (38 x 75 x 6 / 310 coils) and a low profile trundle short (38 x 72 x 6). Heirloom quality with 20 year limited warranty. Made in the U.S.A.