Features a soft, machine washable, water-resistant outer cover. This dual-sided mattress features 2 sides for your growing child. The Infant side is the recommended firmness for infants. The Toddler side is softer and designed for your toddler's comfort. The Dual-Comfort is GREENGUARD Gold Certified and CertiPUR-US Certified. Graco is proudly awarded the PTPA Seal of Approval. 2021 Women's Choice Award for 9-out-of-10 Customer Recommended Crib & Toddler Mattress. JPMA Certified. Expert tested to meet all applicable federal safety and flammability standards. Designed to fit any standard full-size crib and toddler bed. Mattress core made of polyurethane foam. 6-year limited manufacturer’s warranty.