The current chair keeps for several months and I can not complain. As far as he is fine. The only drawback are 4 round, about 0.7cm by measuring dark spots on the (cognac-colored) synthetic leather, which probably originate from a gripping device, as they are very symmetrical. It does not annoy me, but would certainly have been avoided.
Assemble with some skill within one hour. One should - Prior to mounting the armrests - all Schraubgegengewinde freely evert (if necessary cut the leather something warranty?). The screws are only tightened better after back, seat and armrests are connected, because the more game when assembling allowed. In addition, it makes sense to push the caps until days later on the bolts and screws regularly until then. Retightened while the chair is eating.
The second chair cost me a total of EUR 89.90.
* Hard backs are not only uncomfortable, they may also cause pressure damage to the Ulnar Nerve