Simmons' BeautySleepr Superior Rest Crib and Toddler Mattress is durable and firm, yet soft and supportive.Reversible for use from birth to toddler, the infant side features firm foam to provide a supportive sleeping surface. Flip to the toddler side to a hypoallergenic water resistant vinyl cover and a thin layer of memory foam which provides comfort and protection. Safety first - GREENGUARD and CertiPUR-USr Certified - Chemical free and fire retardant protection wrap - Meets or exceeds all U.S. government safety standards - Free of phthalates, formaldehyde, methylene chloride, CFCs, PBDEs, mercury, lead and heavy metals Show 'em what you're made of - Supportive foam and vinyl construction - 234 coils - Hypoallergenic water and stain resistant woven fabric Details, details - Low VOCs for superior air quality - Performance, durability, content and emissions tested - Cover is specially designed to help repel wetness and keep your child clean and comfortable - Side air vents help keep mattress fresh - Made in the USA