I have the Pezzi ball met at the physiotherapist against my back pain and experience it as a device that allows a lot of exercises that are effective with this ball, dynamic and especially playful. Now I use it every day instead of my desk chair. It is permanently active with his back instead to hang limp in the chair. Up often times is announced, rather than convenient to scroll left or right. From an unpleasant odor I did not notice anything at first. It is important to know that the ball is supplied with a valve which is suitable for normal bicycle pump. The pump offered that appears too small for the big ball, so you need not to buy. Even now, while writing these lines, I sit - better: I move - on the Pezzi ball!
