After my first flop with a nice-looking executive chairs another company, I am thrilled by this. He sat up quickly and easily and to assemble and makes a solid, stable impression. The processing and the material is very good quality. The armrests have a little game, but what can not be seen as a flaw due to the height adjustment. After a week of constant back - and produce the backrest this funktuioniert still properly and even with the biggest adjustment you have not the sense of insecurity (wobbly feeling when bad buy). Can only recommend this swivel chair also for 100kg liveweight!