Colgate’s breathe-flex™ is a new model for crib mattress design when it comes to breathability. It features Flex-PE™ foam with micro-channels and an innovative foam coil design to enhance air circulation while stil delivering essential support. The breathe-flex™ is a dual firmness design with extra firmness for proper development on the infant side and extra comfort on the toddler side thanks to additional Flex-PE™ foam layers. The durable, poly/cotton blend cover has a food-grade waterproof backing. The breathe-flex™ has earned the coveted GREENGUARD® Gold certification and is C.P.S.I.A. compliant to ensure there are no harmful chemicals. This mattress meets and exceeds all federal and state requirements for flammability and chemical composition and has earned the Certi-PurUS® certification ensuring the foam is safe with no harmful air emissions. It is manufactured in the USA by Colgate, a third generation, family-owned and operated company that has been making crib mattresses since 1955. This unit fits all standard size American cribs and toddler beds.