I love this chair. I have had my share of desk chairs. This is by far the most comfortable and ergonomic chair I have owned. I am really impressed with my new chair.
I have neck and back issues and have been miserable sitting at my desk for 10+ hours. This chair allowed me enough adjustments to make it comfortable. The easy tilt back is a wonderful feature.
I live in Arizona and my office can get quite warm in the evening. I'm used to the heat but something I can't stand is my back sweating while sitting which my previous chair did. It made me lean forward for a few hours each day to help my back breathe. This led to frequent neck tension headaches. Not fun! So I set out on a journey to find a mesh chair with a small budget. Every single chair - literally every single one - had negative reviews saying "it's trash don't buy this etc." so I eventually had to just pick one. My height is 5'5" and I specifically chose this chair because of reviews from others at a similar height who said it fit them great. They weren't lying. Now I'm an odd case. I have severe scoliosis and fairly bad posture. I guess I'm still too young for back pain so I can't make any comments on how the chair does in that area. But at least for me I actually felt quite uncomfortable when it was locked into its most upright position... It felt like I was sitting *too* straight up. That's probably due to my screwed up back. So I've left the chair's tilt unlocked and adjusted the tilt tension so that it would lean back with me. I managed to get the tension just right so the chair leans back as far as I want based on how much pressure I put on it but then I can release the pressure and gravity holds it there until I sit up. Now I'm very comfortable my back is no longer sweating and the headaches are gone! :D The head and arm rests are optional and if you change your mind about them they are very easy to remove or install again later. - I had to remove the arms because my desk was too small. I'll get a new desk soon and will happily reinstall the arms because they were comfortable. - I almost immediately removed the headrest because when sitting straight up it was actually hurting my neck (I do have terrible neck posture from my previous chair so that might be why). I haven't tested the headrest with my "unlocked tilt" strategy yet I expect it would be far more comfortable. I was actually worried about removing the headrest because I thought it would be necessary to stop my neck tension headaches (I've never had a chair with a headrest before). In my case it turned out to not be important at all and it's only a nice to have when leaning back watching a movie or something. Anyway I'm satisfied!
Chair was missing all hardware and instructions ...screws seat cylinder etc. Return it got another one opened the box at the store and it was also missing all hardware and instructions!