Your baby will sleep well, upon the Kolcraft Pure Sleep Therapeutic 80 Crib Mattress. And you'll rest well, too, knowing that this mattress is built for safety and comfort. The entire mattress is phthalate and flammability compliant, and does not contain toxic fire retardants. The 80 interwoven heavy-gauge steel coils will sense your baby's movement, and responds with increased support. Full perimeter border wire keeps the edges firm and weight distribution bars help prevent sagging. The durable Perma-Dri cover wipes clean with a damp cloth, and provides antibacterial and an anti-static surface. Great for a growing family, this mattress will easily transition from the crib to a toddler bed frame.