The Complete Support and Stability exercise ball is designed to provide a comfortable, supportive and stationary surface for you to exercise. The professional level burst resistant exercise ball is a versatile tool that allows you to exercise and stretch your entire body while engaging stabilizer muscles that often go unused. This fosters improved functional strength, balance and flexibility of your body which can aid in preventing injury and increasing energy. The weighted filler keeps the ball in place; it will not roll around the gym or at home.