The pineapple 65cm gym ball is a quality tool for getting you in shape work all the main muscle groups improve your strength and flexibility stretch out your upper and lower body or rehabilitate joints and muscles after injury all on one piece of equipment the soft but strong anti burst ball will support and cushion you on every exercise and add extra intensity to help you achieve a fitter and firmer body the set is completed by a two way pump for inflating and deflating the ball