This Classica III mattress offers just the right amount of support for your baby for years to come. Support and alignment are important for your newborn up to the time he/she outgrows this top rated crib mattress. This mattress differs in degrees of firmness on each side. The firmer side has Classica II and the less firm side has a slightly less firm foam. Made with non-allergenic, orthopedic foam with ventilated border and a wet-proof, nylon reinforced cover. The Classica III by Colgate is lightweight for easy handling. Meets federal flammability standards. Ten-year warranty. Measures 28 x 52 x 5 1/2. Weighs 7 lbs. Recommended for baby from infancy to toddler hood.