Make your baby's dreams come true with Safety 1st Heavenly Dreams Supreme Firm Baby Crib Mattress. Voted as America's Most Recommended™ brand for Crib & Toddler Mattress, Safety 1st ensures every baby gets the sleep they deserve. This mattress is made with cotton, polyester and wool fibers. What's more its high-density thermos-bonded core ensures firm support for your sweet baby all night long. Its cover is removable and has the softest rayon made from bamboo making it breathable and machine washable. Assembled in Canada without the use of flame retardant chemicals. Designed to fit any standard cribs and toddler beds with measurements of 28.5 in. X 53 in. Give your child the rest they deserve and need with Safety 1st Heavenly Dreams Supreme mattress. This mattress has achieved GREENGUARD Gold certification, meeting the standard for low-chemical emissions for a sleep environment that's always safe and sound.