Love this chair. It's my 2nd. My only complaint is the smell that it emits. Unsure where it was made but I can only assume that the molding process of some of the plastic parts allows for this stench. It literally smells like burnt plastic. After 2 weeks I was hopeful that it would air out - Not yet. Fingers crossed that it eventually sorts itself.
Chair is great except the Neck Rest is way too low and cannot be adjusted higher. It is fixed in height although it can be adjust forward and backward. I am 6' tall and after sitting in the chair for a day I had to un-bolt the head/neck rest. The chair is much better without it. I would have rated it 5 stars but having to unbolt the headrest is a major problem. I could not live with it.
Super easy to assemble - took about 15 mins...total! Extremely comfortable with great back support plus it lifts higher than other chairs so Mt elbows and wrists are more ergonomically supported for my desk. Castors roll smoothly without scratching my hard wood floor.