Waterproof Vinyl Cover Made in US WE PUT BABY’S SAFETY FIRST: Non-toxic construction is free from harmful materials/chemicals; Meets or exceeds flammability, lead, phthalate and CPSIA testing and does not contain toxic fire retardants.General Note: Please allow 24 - 72 hours for your Mattress to regain its full shape. Any memory foam will expand faster in a warmer room. In cold temperature, at delivery, your mattress may take a bit longer to return to full sized from its compressed state.The expansion time of the mattress will vary as per the surrounding MADE FROM HEALTHY MATERIALS: Premium sustainably sourced firm fiber core made from upcycled plastic bottles for a healthier, longer sleep for your newborn and toddler WATERPROOF FOR EASY CLEANING: Durable, waterproof vinyl cover is easy to clean and hypoallergic; Both sides of the mattress feature a waterproof cover, so flip the mattress when it comes time for your baby to move to a toddler bed for freshness SAFETY CERTIFICATIONS: This mattress is GREENGUARD Gold certified, which means it’s made of materials with low chemical emissions, helping contribute to healthier environments and indoor air in your home; JPMA certified IMPORTANT INFO: 7-year warranty; Made in USA; Size: 27;5"W x 52"L x 5"H (fits standard cribs and toddler beds); Lightweight design makes changing sheets easy; Square corners help for secure fit inside the crib or toddler bed