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.
Surprised by how much I love this chair. Needed as work from home order that started as a few days became weeks until ...who knows. But love that this was easy for me to put together in about 30 minutes without interruption.
Using this chair at the home office for long periods of time and it works great. Really feels comfortable and has good lumbar support. I like the head rest too. I'm 5'7" and it fits perfectly but would fit slightly taller or smaller people too and is removable. Chair was easy to put together and seems high quality. Much better than my chair at the office. My back isn't sore at the end of the day for the first time in a very long time.