Solid quality and processing, space-saving, no "permanent seat"

Assembly:
The chair was in less than 10 min assembled (except for a single Allen screw everything without tools, and the Allen key was the same case).

Optics / quality:
Very good impression, everything is made solid, good materials, solid, thick cushion, yet unobtrusive, especially if you have a private office at home is not just a studio. The usual large chairs with armrests, high backrest and headrest would simply be too bulky for my relatively small computer station.

Sitting (computer work):
I have the chair now several months daily approximately 1 hour in use (PC work after office hours). It's my first office chair in the lower price range for the 40-euros-IKEA stool next to mine and probably three times as expensive chair in the office of the company where I work every day.
The resilient in all directions joint directly under the seat is a beautiful thing, thus is not sitting stiffly, you can jiggle a bit and move the lumbar.
However, the angle of the seat can not be adjusted. The set inclination is felt horizontally or slightly higher than the front and rear impacts at me from so that it presses lightly while sitting on the thighs, when I adjusted the seat height on my desk.
The whole construction "urges" me to move, prevents me from sitting still. That is I think not bad, but sometimes it bothers and such a chair without armrests is definitely not suitable for a full-time computer workstation.
The upholstery and the respect felt warm.