The award winning Naturepedic Crib Mattresses combine natural, non toxic and healthy materials. Naturepedic features U.S. grown organic cotton filling (NO polyurethane foam). The easy to clean 100% polyethylene waterproof surface is so pure that it meets food contact standards (NO Vinyl/ PVC, phthalates, lead, or biocides). The waterproof surface also provides an impenetrable barrier to dust mites. Exclusive non toxic fire protection is naturally derived and meets and exceeds all federal and state flammability standards without the use of potentially harmful fire retardant chemicals (NO brominated or chlorinated chemicals, PBDEs, antimony, modacrylic, PAN, boric acid, etc.). There is also no latex, coir, wool or other potential high allergy materials. Naturepedic mattresses ensure firm support for your baby and toddler. Naturepedic mattresses meet the strict GREENGUARD certification standards and are recommended by the \Healthy Child Healthy World\" national childrenand#8217;s advocacy coalition. Winner of numerous awards and prestigious endorsements, Naturepedic crib mattresses made with organic cotton are simply the healthiest available. Standard crib size measures 27.75 x 52 x 6. Also fits toddler bed. Made entirely in the USA."