BeautySleep ® Superior Rest ™ Crib and Toddler Mattress is durable and firm, yet soft and supportive. 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 which provides extra comfort. Woven fabric cover has a waterproof backing for easy clean ups.GREENGUARD Gold Certification. Learn our six simple steps to designing a nursery. •Natural cotton wrap for comfort and protection wrap•Innofoam corner protectors create strong corners for a secure fit inside the crib•Meets or exceeds applicable US safety standards•Free of phthalates, formaldehyde, methylene chloride, CFCs, PBDEs, mercury, lead and heavy metals•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•2-stage design grows with your child; 1 side provides ideal firmness for newborns and the flip side offers additional comfort for toddlers•Standard sized mattress fits both cribs and toddler beds•Side air vents help keep mattress fresh•Product is GREENGUARD Gold Certified•Supportive foam and vinyl construction•242 interlocking coils with border wire•Water and stain resistant woven fabric