With its convenient 2-in-1 design, the Slumberland 2-Sided Crib Mattress is built to suit your child from birth through the toddler years. The infant side, is all about support: its set of 260 steel coils and its 6-gauge border wire make it firm enough to meet the unique demands of infancy. Once your child gets a little older, you can flip it over to let him or her enjoy cushy comfort that's perfect for active toddler. The Vinyl embossed reinforced waterproof cover is hypoallergenic and designed with waterproof binding so the entire surface can be cleaned with soap and water. The natural airflow pocket keeps the mattress fresh without the use of small metal vents. Measures 51.63 in. x 27.25 in. x 6 inches and fits both cribs and toddler bed frames. We offer a 10-year manufacturer's warranty on workmanship and materials. We proudly make all of our crib mattresses in our own Manufacturing facility in South Plainfield NJ, USA to ensure the best quality safety possible. GREENGUARD Gold certified, free of prohibited phthalates, lead, and mercury, and meets all applicable federal flammability standards. JPMA Certified.