This chair looks decent however it's for small people :-) (I read that it's for taller ones and ordered it blidnly). 1) I am 6'0 (longer body shorter legs) and the headrest rests on my shoulders. The headrest is perfect for my wife but she is 5'4". 2) The width of the chair is almost a lie. You should subtract at least 2" from the width. There is plastic beneath the mesh on the sides of the chair. If you sit anywhere close to 1" to the side of the seat you will sit on hard plastic. My wife's chair has the same width (almost exactly) but it's much more comfortable -- I do not sit on plastic unlike in this mesh chair. The mesh simply stretches and I sit on support. I am 185lbs. Overall i do not recommend this chair if you are looking for a wide-ish chair or if your torso is longer than average (longer torso shorter legs). Oh and lastly the tilt lock has a bit too much slack for my taste. It has some degree of freedom even when the tilt is locked.
I ordered the chair wheels fell off automatically with no effort thought it was a bad chair so I returned it for another one. Same exact issue would not recommend it.