The Naturepedic No Compromise Organic Cotton Classic 252 Crib Mattress provides your precious infant a healthy, luxurious sleep environment. The seamless mattress with waterproof cover is filled with only organic cotton, free of any chemicals. Innersprings have been orthopedically designed for perfect sleep posture. This fabulous crib mattress is also hypoallergenic. Frankly, you couldn't ask for a safer crib mattress, and that should help you sleep better as well!