Pro Series Exercise Ball Slow Deflate Yellow 45cm. Stockings Carbon steel frame with double coated Exercise Balls Carbon steel frame with double coated chrome for an attractive chip proof maintainable finish Height: Approx 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