LA Baby 3-inch thick Mini/Portable Crib Mattress in white is tear resistant and fits any standard size portable crib. The cover has a dust mite barrier, is hypo-allergenic, anti-microbial and non-toxic. This outer cover material is also stain resistant, waterproof and easy to keep clean with mild soap and water that helps make sure your baby's sleeping environment stays healthy and sanitary. The 3 inch thick mini/portable crib has box edge construction mattress and an overall size of 24" X 38' X 3". Proudly made in the U.S.A from domestic and imported sources.