Help transition your little sleeper into a big kid bed with this soft, colorful and waterproof memory foam mattress. Featuring 1.5 in. of gel-infused memory foam and 4.5 in. of dense support foam to help create a cooler and more comfortable experience for lightweight sleepers. Wrapped in a colorful and waterproof cover, this mattress is protected from spills, accidents and even features rubberized nonslip backing to ensure the mattress stays in place.