DUALSIDED MATTRESS IN A BOX Free of fiberglass free of chemical flame retardants Fits any brand of standard fullsize crib and toddler bed Allow mattress to expand fully immediately upon delivery in a room temperature setting for up to 48 hours GREENGUARD GOLD AND FORMALDEHYDE FREE CERTIFIED Rigorously tested by independent thirdparty laboratories to be GREENGUARD Gold Certified and Formaldehyde Free Certified CERTIPURUS CERTIFIED FOAM Made with a CertiPURUS Certified foam core Certified flexible polyurethane foams meet CertiPURUS program standards for content emissions and durability and are analyzed by independent accredited testing laboratories ULTRASOFT WATERPROOF MACHINEWASHABLE COVER Featuring an ultrasoft removable machine washable cover with a waterproof sleep surface Gently unzip outer cover wash in cold water delicate cycle no bleach and hang to dry do not place in dryer FITS ANY STANDARD FULLSIZE CRIB TODDLER BED Designed to fit any standard fullsize crib or toddler bed L 52 in x W 28 in x H Up to 6 in Weight 1267 lbs Mattress core made of polyurethane foam 10year limited manufacturers warranty