Overballs are used in rehabilitation and in various style of exercising. The exercising with Overball is slow and aimed predominantly on improving of body posture and muscular disbalance. These exercises employ deep stabilization core muscles - including neck muscles, back muscles, abdominal muscles and mucles of pelvic floor. OUsing Overball tightents your body and improves you posture. It can be also used as a sitting balance pad on a chair or driver's seat.