Inner-spring mattress designed to fit a play yards measuring 25.5" x 37.5", Hypo allergenic, antibacterial cover aids in the prevention of mold, mildew, Passes the Federal Standard Flammability Standard 16 CFR 1633, Constructed of quality materials and workmanship in the USA, Dimension 37.5" X 25.5" X 5", Designed to fit a play yards measuring 25.5" x 37.5", Standard 16 CFR 1633, Hypo allergenic, antibacterial, cover aids in the prevention of mold, mildew; Constructed of quality materials and workmanship in the USA