The 2-inch-thick La Baby Mini Crib Mattress lets baby sleep comfortably even when away from home. With measurements of 24 inches wide by 38 inches long, this portable mattress fits most portable cribs. Polyfiber filling stays firm yet comfortable over the years. A tear-resistant vinyl cover keeps dust and moisture off the mattress and provides a hypoallergenic, anti-microbial surface for sleeping and napping. Mild cleanser and warm water will take care of any dirty spots on the stain-resistant cover.