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 waterproof side is perfect for infants and training toddlers, while the quilted side offers a more luxurious "feel" for older children. With 252 coils, edge support, organic cotton throughout, and a versatile 2 in 1 design, the Organic Cotton Ultra 2 in 1 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 moms 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.