Achieve a safer, longer, happier sleep for your baby (and you!) with Serta Perfect Start Breathable Limited Two -Stage Crib Mattress and Toddler Mattress. Topped with a breathable cover, the three-dimensional mesh fabric allows air to flow through the cover fabric and under baby, promoting continuous airflow and helping regulate baby’s temperature for a comfortable sleeping environment. For easy cleanup, the fully removable cover is machine washable while the waterproof and hypoallergenic mattress encasement wipes clean. At its core, this mattress features a fiber construction made from recycled bottles that delivers the ideal firmness level for newborns, infants and toddlers while helping save over 300 bottles from the landfill--great for babies, great for the environment. Built to effortlessly grow with your child, this mattress features two distinct sides, the infant side features a firm sleep surface that is ideal for babies, while the toddler side features an additional fiber pad layer for comfort as your child grows. Get the Serta Perfect Start Breathable Limited Two -Stage Crib Mattress and Toddler Mattress for your little one and breathe easy every night. Patterns on mattress cover may vary. This crib mattress is GREENGUARD Gold certified. Tested to meet or exceed the most stringent chemical emissions standards to create a healthier home for your baby, it has been screened for more than 10,000 chemicals and VOCs that are known to pollute indoor air. Certified to contribute to cleaner indoor air, you can feel good about putting this mattress in your child’s nursery.