Our slip cover is cotton polyester and features a wide zipper for easy care. The zipper facilitates easy separation of the insert and cover for washing. The cover is sewn with reinforced stitching so as to increase its durability. The covers are easy to switch out if they get dirty. Just zip your spare cover on and throw the dirty one in the laundry. These covers are machine washable, and will hold up to frequent washings. Our cotton covers come in several baby themed prints that are perfect in any home or nursery.