The armrest surface is hard. Resting my arms there for a couple of hours I get burns and tingling. The armrest material has wear and tear within a few months/Rest of the chair other than the armrest is a good investment.
Instructions were amazingly simple. I did it myself in 45 minutes. Problem - chair is so comfortable and relaxing - difficult to work!!! Posture is much better and my neck does not hurt at the end of the day. Do not hesitate to purchase this chair.
My growing teenager picked it out for the ergonomic design and the cool mesh because he gets hot easily. He put it together by himself and was already using it when I got home. He loves it but I noticed he ended up taking the head rest out - perhaps it's too high for his current 5'6" frame. Looks good and sturdy though!
I think the chair is good enough for now. I like the color mesh it's probably not best ergonomical choice or for shorter people. I'm 5'3" and I wish there were more adjustments I can make. It doesn't go up very high the arm rests do not go up or adjust in height and same with the head rest. The arm rests annoyingly hit the desk right where i need everything positioned. Doesn't adjust as much as I wish. I will have to put a foot rest to reach the floor and a seat and lumbar cushion to add height and comfort to it. Which I would have done anyway since i sit all day on the shorter side and need more ergonomic features.