For 20 euros, the frame is quite sturdy, it weighs a few pounds, and in a few days of use, nothing is distorted or moves while playing. A small complaint is that the seat "deflates" and is smaller than it appears in the picture, and if you tighten/tighten the seat too much to keep it from moving, you will dent the tube underneath, so it is not really possible to fix the seat firmly so that it does not move at all, although this would be a problem on much more expensive chairs, but nothing that bothers you when playing. For its price, it is definitely a very good chair.