The No-Compromise?Organic Cotton Classic offers everything you might need in a crib mattress. Weighing about 22 lbs, it's heavy duty innerspring is built to last. It is waterproof, firm and will provide your child with a more natural, healthy and comfortable sleep environment. Luurious organic cotton fabric with easy-to-clean 100% polyethylenewaterproof surface (so pure it meets food contact standards). Provides the ultimate non-toxic and stain resistant waterproof mattress cover. Also functions as a dust mite/bed bug barrier - no need for an additional dust mite encasing. Clean white finish. Organic cotton is the purest form of cotton and a healthier alternative to synthetic fabrics and foams. Naturepedic uses only U.S. grown and certified organic cotton as filling for its mattresses and buys directly from USDA certified sources.