The No-Compromise Naturepedic Organic Cotton Classic is organic, waterproof, firm, and will provide your child with a more natural, healthy and comfortable sleep environment. It features an easy-to-clean 100% polyethylene waterproof surface so pure it meets food contact standards. It provides the ultimate non-toxic and stain resistant waterproof surface that also keeps dust mites out. The polyethylene surface is laminated to an organic cotton cover that is unbleached, undyed, and grown without synthetic pesticides, herbicides, or chemical fertilizers. 150 spring coils provide plenty of even support. Does not contain wool or latex. Most important of all, Naturepedic mattresses use non-toxic fire protection to meet current federal standards. Their exclusive fire protection system features a non-toxic and naturally derived fire barrier system made from baking soda that is safe and effective. It meets and exceeds all Federal and State flammability standards without the use of harmful chemicals. Standard crib sze of 27.75" x 52" x 6". Will also fits toddler beds. Includes a lifetime limited warranty. Made in the U.S.A.