Evolur Sleep comfort, Lite plus fiber mattress provides the support babies and toddler need for Good night sleep. Our Stage Sleep technology mattress inner core is constructed with extra firm fiber for infant side, comfort layer for toddler, a soft touch fabric with inverted seams and a waterproof protection barrier. This mattress comes with a removable woven soft cover with a baby safe zipper and is topped with insulated layer of chemical free Fire barrier for ultimate comfort. Evolur Stage technology mattress is built to fit both a standard full size crib and toddler beds.