The chair is very comfortable and easy to assemble. The only negative I would assign to it is that the arms of the chair seem a bit too far apart... but this is a very minor thing.
This is my second chair I have one at home and one in the office. It is easy to assemble and comfortable to sit in all day long. I had two other chairs before I broke down and bought the the newest one for work.
Solid chair assembled rather nicely. However it is rather stiff back and very little lumbar support or adjustment. Rolls easily almost too easily actually the chair can slip out from under you until you get use to the movement. All in all a nice chair but not great.
It's a good chair and I have just one complaint. This chair doesn't keep the high you choose. At any time without any reason when you are seat on the chair it goes down. Is very disgusting