Newly designed AgileFIT Weighted AntiBurst Stability Ball is weighted with special granular ‘sand’ that allows the user a number of advantages over the traditional lightweight stability balls:
The weighted ball can be used for all sorts of weighted functional movements, and the instability and off-balance nature of the sand moving around, when the ball is lifted and swung around, serves to provide an excellent core strengthening, and upper body workout.
Will improve balance and flexibility of user, strengthen lower back, arms and shoulders safely.
Also, the ball will tend to stay in one place and not roll randomly around your fitness room.