I have been using this chair for one week now the back lumbar feels comfortable and sturdy. The bottom seat seems to gave give and I don't think it will hold up I'm only 120lb!
I really like the sleek modern look of this chair and the look and feel of the bonded leather. It's soft but not too soft and it's really comfortable to sit in for several hours at a time. The only drawback if that it was quite a pain to assemble. When attaching the back and the arms it was very difficult to get all the screws to go in all the way. I had to try all different ways and combinations of screwing them in and somehow I got them all to go in.