The Colgate EcoClassica III is from the Colgate Cradletyme Naturals collection of eco friendlier crib mattresses, pads, and accessories. The EcoClssica III is a high quality, lightweight (9.6 lb), orthopedic style dual firmness Infant / Toddler foam crib mattress. The firmer supportive infant side is very firm. The less firm, more comfortable toddler side is also firm to support toddler bodies but, less firm than the infant side. Mattress fits all standard size American cribs and toddler beds. An overall 6" mattress thickness means tight fitting sheets. A certified organic cotton cover with a waterproof backing puts organic cloth closest to baby and the waterproof backing lets nothing into the mattress. Inverted seams provide for a sleek appearance. All foam in this mattress is CertiPUR US certified to be safe, high quality foam. All foams are also eco friendlier because they are made with (non food) plant oils replacing petroleum based oils. The Colgate EcoClassica III mattress passes all federal and state requirements for flammability and chemical composition and has been GREENGUARD certified to have no harmful air emissions. Lastly, the mattress is made by Colgate, The Crib Mattress Specialist, who has been making mattresses and trusted by parents for over half a century.