The Dream On Me,5ÌÒ Double Sided, Play Yard Foam Mattress features the absolute best of both worlds for your baby. One side is made with firm foam for added support during infancy and the first few months of life. As your baby grows, the mattress can be flipped over to reveal a soft foam for an inviting, comfortable, environment for your sleeping baby. Rest easy knowing this mattress is phthalate and lead free and constructed with quality materials and workmanship in the USA. A hypoallergenic, anti-bacterial waterproof cover aids in the prevention of mold, mildew and odor. Easily wipes clean with warm water and mild soap. Complies with Federal Standard Flammability Standard 16 CFR 1633. Designed to fit a play yards measuring 25.5 x 37.5ÌÒ.