Sweet dreams for baby begin with this oh-so comfortable crib and toddler bed mattress. The sophisticated support system features thermo-bonded polyester at the core to offer long-lasting firmness and durability for your little one from infancy to toddlerhood, catering to baby’s growth. Its lightweight design enables easier changing, while square corners ensure a snug and secure fit inside the crib or toddler bed frame. Finally, the waterproof, vinyl cover repels wetness to help keep baby dry and comfy all night long.