I bought along with a desk Kettler this chair. It offers the advantage that the child does not permanently can rotate / needs and thus a concentrated work NICT is possible. It is stable, hard and functional. Unfortunately, the processing is not so good that something got stuck there during assembly of the pipe rack. The reason was partly to thick paint. In addition, I have had no paint in Enbereich on a pipe segment and thereby had already approach of rust development.