The head rest is not working either for me or my wife. the height of head rest is not adjustable. the angel of head rest is adjustable not fit too. Arm rest height adjustable but not convenient to do so. However the mesh design keep you cool after few hours working.
This chair is great and gets 8-10hrs of use a day in my home office. Good adjust-ability and the only reason I didn't give it 5 Starts was the lumbar adjustment is there but not enough for me (up/down).
I purchased this chair a few weeks ago and was happy the first few days but then began noticing that the staples that hold the seat mesh to the chair are coming out. Now the mesh is separating from the chair. I'm very disappointed and will be taking it back.
Just what I needed for my in-home office. Very comfortable and airy -- very cool. Assembly easy. Took 10 min. Slightly narrow. I like that but probably not the best chair for someone broad in the beam.