Headrest does not adjust up or down sitting in the chair the headrest pushed in on my shoulders I'm 6'3". I ended up leaving it off. Noted on the instructions it's listed as an 'optional' piece. Not a big deal overall. There seat cushion just the stretched flexible mesh. After a few hours of comfortable sitting I find it begins to feel a bit tight in the hamstring I'm 185 lbs. I'm a little concerned that the material will stretch overtime. The lumbar support raises but during use (leaning back at times) it clicks down the notches until its a the bottom again. In short seems like it'd be a good chair for an average sized fellow. If you're taller I wouldn't recommend it.
I highly recommend this desk chair especially if you work at a desk for long periods of time. This chair was very easy to assemble make sure all the parts are included before you begin. I love the head rest when you break from your computer screen great to lean back and rest your eyes. Great price also.
I love this chair. I didn't think it needed the headrest since it is an office chair but I find myself resting my head on it when I am reading whatever is online. Within a day I realized the stress in my neck and shoulders were gone! I couldn't believe a chair would do that but it has. I feel the muscle tension release. Even my chiropractor noticed the difference in me. Amazing! Overall this chair is very comfortable and sturdy. I highly recommend this chair.
The Dexley mesh chair was exactly what I wanted in an office chair - comfortable adjustable with a mesh seat and back at an affordable price. The chair is adjustable without being ridiculous about it. I chose to get the chair in black but I considered red for its accent. I didn't think I would need the headrest but it is natural and is comfortable to use. Great chair.