I purchased this chair because it fit me as well or better than much more expensive chairs at other retailers. I have lower back problems if my chair does not have good lumbar support and this chair so far seems great. I recommend it.
I am about 5'11" and this chair is too small for me. The headrest hits me in the shoulders and the lumbar support does not go up high enough and is very uncomfortable. The padding on the lumbar support is also very thin and the plastic digs into me. I had to remove the lumbar support from the chair. I will need to find a solution to heighten the headrest it us currently sitting on the floor next to my desk. Overall the chair seems to be well made and sturdy but i would not recommend it for anyone over 5'8" or 5'9"
I am not entirely happy with the chair and am thinking about returning it. I am not a "Big" person but the seat is pretty narrow. Even my son who is pretty slim feels the same way.