Perform a variety of exercises in the comfort of your own home with this Reebox Elements Gym Ball. Whether you use it at the gym or at home you can use it for a variety of exercises to help improve your core stability, strength and tone. Intensify exercises such as leg lifts, ab crunches and press-ups and never have the same workout again. 65cm diameter gym ball. Complete with pump, measure tape and workout DVD. Anti burst material means the ball will slowly deflate if punctured and it also features ribbing for additional grip . Great for working core muscles, this Reebok gym ball is deal for sit ups, back exercises and general fitness . Maximum user weight 110kg (17st 5lb).