The No-Compromise Organic Cotton 150 Crib Mattress Classic from Naturepedic is frankly the healthiest crib mattress available for your baby. With a waterproof cover, this firm yet comfortable seamless mattress with organic cotton filling keeps potentially dangerous chemicals from your child’s crib. Baby always sleeps in comfort and style. Ensure years of good nights with a natural, healthy and orthopedically designed sleep environment. You'll sleep better, too, knowing your child has a hypoallergenic mattress in the crib.