I am 5 ft 3in and both the head rest and lumbar support are perfectly positioned ….headrest is adjustable. I prefer the more “upright” aspect of this chair for computer work while I can very easily recline slightly when not in front of the computer. The arm rests are padded but nice and firm which adds to the ergonomic nature of using a keyboard affixed to the underside of my computer desk and are easily adjusting up and down….or adjusting arms wider or narrower - best to do that when putting the chair together. the seat and back are nice and firm yet flexible. This is not a good chair for very large people but I particularly appreciate the “slope” on the seat front so I’m not cutting off circulation as Inwouldnon larger chairs with deeper seats. I find it far more comfortable than my large leather executive chair! You will too.