Features a soft, machine washable, water-resistant outer cover with a convenient "quick unzip" feature on the "toddler" side for accidents. GREENGUARD Gold Certified, meaning it has been screened for over 10,000 chemicals and volatile organic compounds (VOCs) known to pollute indoor air. CertiPUR-US Certified, meaning it is made with no intentionally added ozone depletes, mercury, lead, formaldehyde, and no accessible hazardous heavy metals. Proudly awarded the Parent Tested Parent Approved (PTPA) Seal of Approval and 2023 Women's Choice Award for 9 out of 10 Customer Recommended Crib & Toddler Mattress. JPMA Certified, meaning it has been expert tested by independent laboratories to guarantee this product meets the highest standards for your child's safety. It is also expert tested to meet all applicable federal safety and flammability standards. For optimal performance, we recommend you unroll your mattress and allow to expand immediately upon delivery to allow maximum time for full expansion in a room temperature setting. Designed to fit any standard full-size crib and toddler bed. Dimensions: Length (52 inches) x Width (28 inches) x Height (up to 6 inches); Weight (12.67 pounds). Mattress core made of polyurethane foam. 6-year limited manufacturer's warranty. Exclusively manufactured by Stork Craft Manufacturing (USA) Inc.