Evolur Sleep Premium breath flow classic innerspring mattress provides the support babies and toddlers need for a good night’s sleep. Our breathe flow technology mattress inner core is constructed with extra firm 150 heavy-duty interlocking coils, soft-touch air-permeable fabric with inverted seams, and a waterproof protection barrier. This mattress is topped with insulated layer foam for ultimate comfort. Evolur stage technology mattress is built to fit both a standard full-size crib and toddler beds. Evolur mattress meets the Federal Flammability Standard, rest easy knowing this mattress is tested for phthalate and lead and constructed with quality materials and workmanship in the USA.