Breathable Crib Mattress, Waterproof Surface & Binding - Reinforced embossed waterproof and stain-resistant cover with lock-stitched binding helps to keep liquids from seeping inside. Wipes clean easily. Lightweight 2 Stage Design for Better, More Restful Sleep - Dual Firmness design with an ultra-Lightweight, firmer foam infant side and a cozier toddler side with a soy foam topper for added comfort and better sleep Premium Foam - The foam used throughout is CertiPur-US Certified foam made in the USA. Contains no harmful chemicals, phthalates, lead, mercury, formaldehyde, PBDES, TDCPP or TCEP flame retardants that may be a concern in non-certified foams. Cover is wet-resistant. Baby Crib Mattresses Made in the USA - Sealy Baby Crib and Toddler Mattresses are designed, engineered, and proudly made in the USA of U.S. and imported parts. Designed to fit any standard full-size baby crib and toddler beds (52 in x 28 in). Baby Registry Must Have! Safe Crib Mattress Air Quality - GREENGUARD GOLD Air Quality Certified, no harsh chemicals added, firmness and durability tested to last in toddler years. A coil mattress for cribs is tested to more standards than foam ones, passing ASTM safety standards. Pair with sealy Crib Mattress Protector - For the perfect pair, complete your Sealy Baby crib mattress with a coordinating Sealy Baby Waterproof Crib & Toddler Mattress Pad (available in 1-pack and 2-pack options)