Why just not use a traditional medicine ball?
Of course you could. But, often med balls are too heavy and you will get hurt. Others are not user-friendly because they are too hard, too large, or too small; some are slippery or rough on the fingers. The Performance ball is user-friendly and versatile. You can use it for exercising or stretching and you can play with it or just use it to relax. Its also a multipurpose training tool; for rehabilitation to core training, from general conditioning to sports conditioning, one ball does it all.
