Create an unparalleled sleep experience for your little one with the Beautyrest Black Diamond 2-Stage Crib and Toddler Mattress by Delta Children. At the core of this baby mattress 231 Pocketed Coil springs provide firm and even support. These individually wrapped coils provide greater durability than traditional coils while delivering pressure relief. Built to keep up with your child's changing sleep needs, this mattress is designed with two distinct sides, the infant side features a firm, soy enhanced foam layer for comforting support while the toddler side has a layer of Micro Diamond Memory Foam which creates a cool, comfortable sleep space.