The versatile 2 in 1 Organic Cotton Ultra 252 Crib Mattress from Naturepedic will grow with your child for many healthy years of comfortable slumber. Water-resistant on one side and quilted on the other, it provides a more luxurious feel for older children. Organic cotton filling has no noxious chemicals. The orthopedic innerspring provides support and fosters good posture. This is a natural, safe and comfortable sleep environment for your baby that's good for Planet Earth as well. Won't that help you sleep better, too? The waterproof side is perfect for infants and bed wetters, while the quilted side provides a more luxurious "feel" for older children.