The L. A. Baby 2-inch thick Mini/Portable Crib Mattress in white is tear resistant and fits any standard size portable crib. It has a dust mite barrier, is hypo-allergenic, anti-microbial, and non-toxic. The outer cover material is also stain resistant, waterproof, and easy to keep clean with mild soap and water, ensuring your young guests' sleeping environment stays healthy and sanitary. The mattress measures 24" x 38" x 2".