Hypafix Dressing Retention Sheet, Skin Friendly, White, Non Sterile, Non Woven, 6 inch X 2 yards, 1 Box Stockinette closed cell foam for maximum lactose free closed cell foam for maximum comfort Excellent Retail Packaging * This ball was specially designed to deflate slowly if punctured thereby reducing risk of injury * Provides improved stability at the points of body contact and enhanced performance due to the responsive surface design * Comfortable to sit on * Great grip thanks to built in latitudinal ridges and an outstanding texture that doesn t feel like plastic * Comes with two plugs an inflation adapter a measuring tape to help insure proper inflation and a poster detailing 24 exercises The backing material includes a split liner to facilitate quick and easy application stretchable material offers flexibility and comfort