The lumbar support bar arc is too sharp the highest setting is too low and the adjustment mechanism slips. Either the bar needs to be more adjustable (e.g. angle height) and the slope gentler or it needs to be removable. Otherwise I think it's a great chair.
The chair was pretty comfortable it breathed well being made of mesh. It leaned back a bit too far for my taste and only had 3 settings: straight all the way back or slightly tilted. The biggest problem is how it broke within 6 months. The back of the chair which is made of cheap metal completely broke near the screws. Very unsatisfied by the quality.
My wife’s a Chiropractor and says this is a great ergonomic chair. My back doesn’t hurt from sitting anymore! I got one for my home office & I liked it so much that I went back for another for work! Highly recommend. Best office chair I’ve ever owned.
I love this chair and now have purchased a total of 3 over a couple of years. One for my office one for my home office and one for my wife's office. if I ever need another office chair this is what I will buy.