The adjustments move the chair items about 1/2 inch which is next to nothing. Lumbar support is locked in a low adjustment with only the 1/2 inch adjustment. Height adjustment is the only redeeming grace.
Bought this for myself. Unfortunately I'm 6' 2" and the headrest is pressing on my shoulders. The area that I seat on was a bit narrow for me. My wife who is 5' 3" loves it.