The stool fits my ideas. The assembly went quickly equip. Then, a first sample seats - very good. It is important to give the included ball pump the correct filling quantity of air in the ball or to let out. On the stool a sitting is really controlled backrest boards. At first I was skeptical because of the lack of backs. The skeptic, however, rather quickly. Anyone who has problems with his back and would like to build his back muscles while sitting, I can recommend this stool. On one but you should be set: If you have long done nothing for his back and from then one uses the stool, there are at the beginning of muscles of the lower back muscles :-)
Before I ordered the stool, I thought about a ball-cushion. This is quite flexible and can therefore be used anywhere. The seat cushion (half ball) This pouf can however also take out and also used anywhere. It is designed so that you can use this also for floor exercises. Another motivation to order the stool, was that he did not take away as much space as an office chair. Thus I was able to exchange my old, quite chunky office chair against the plain-looking stools.
