Restful sleep for your little one. The Sealy Baby Ultra Rest crib mattress features firm quality support throughout with heavy gauge interlocking coils steel border rods comfort layers and an easy-to-clean laminate cover. Sealy Kolcraft Kolkraft Colcraft crib crib mattress crib mattresses mattress mattresses baby baby mattress infant infant mattress toddler toddler bed innerspring coil coils Ultra Rest sleep gentle sleep