The 2-in-1 design of the Dream On Me Bedtime 6 in. 150 Coil Two-Sided Crib and Toddler Mattress is conveniently built for your growing child. From birth through their toddler years, this mattress features an infant side that is all about support and a toddler side that offers cushy comfort. Both sides feature a waterproof, triple-laminated fabric cover that is easy-to-clean. Ensure mattress covers or fitted sheets are not too tight or loose over a crib mattress to practice safe sleeping.