The BeautySleep® Naturally Crib Mattress provides firm support while also being soft and comfy. Reversible for use from birth to toddler, the infant side provides a supportive sleeping surface. Flip to the toddler side for an extra layer of convoluted foam that provides extra comfort. It features naturally blended cotton layers for ultimate comfort and a naturally woven cotton cover. The GREENGUARD Gold certification means it's guaranteed for low chemical emissions, contributing to healthier environments.