The Classica III ?Dual Zone is a 5 inch thick high quality dual firmness infant/toddler lightweight foam crib mattress. It features a tear-resistant, waterproof triple layer nylon reinforced vinyl cover, hypoallergenic foam, cloth bindingand eyelet vents. This orthopedic style mattress fits all standard size cribs and toddler beds. Its dual firmness offers very firm support for infants and greater comfort for toddlers. The mattress passes all federal flammability standards including 16CFR-1632 and 16CFR-1633, as well as CPSIA safety standards. It is also GREENGUARD certified for high quality standards in terms of indoor air quality. This is the main reason why parents no longer have to worry about their babies having a good night�s rest because the Colgate Classica III Foam Crib Mattress, White is there to save the day.