The Graco Ultra-Premium 2-in-1 Crib and Toddler Mattress is dual-sided for comfort and safety as your child grows. The infant side is designed with the recommended firmness for safer infant sleep. Then, when your child transitions to a toddler bed, flip the mattress to the toddler side for a softer feel for big kid comfort. The mattress features a soft, machine-washable, water-resistant outer cover with a convenient ""quick unzip"" feature that makes cleaning up after nighttime accidents easier. The Ultra-Premium Mattress has been rigorously tested for safety standards. It is GREENGUARD Gold Certified, CertiPUR-US Certified, JPMA Certified, and expert tested to meet all applicable federal safety and flammability standards. The core is made of polyurethane foam and the mattress is designed to fit any standard-size crib and toddler bed. Rest easy knowing it's backed by a 6-year limited manufacturer’s warranty. Exclusively manufactured by Stork Craft Manufacturing (USA) Inc. | Graco Ultra Premium 2-In-1 Crib And Toddler Mattress, White