I honestly did not expect that the chair as comfortable. And unlike a comment, I do not find that the elastic irritates the back (unless it is shirtless I guess ...).
The seat is really nice, and good back support folder, in addition to being perfect level for me height (1.80m).
Delivery side nothing wrong: quick & clean.
Finally for assembly, this really is not rocket science. In less than 30 min seat was used (and no faults to report on the screw, or other).
In short, I really recommend this chair!