The chair is ok, but not optimal in my personal opinion. It says it is angle adjustable, but it is not. It just goes up and down, no tilt. Another flaw is the back support. While it is adjustable to go up and down, the adjusting knob doesn't hold completely the back support. If I have it all the way up, next day in the morning the back support is all the way down. For the price I thought this was going to be a superb chair, but it's rather a basic one.