This is a nice moderately priced chair. The lumbar support is good and so is the headrest. The seat is able to be positioned not only up and down but also tilting forward/backward. I’m 5’2” and find this comfortable. Good seat depth and width. The armrest are ok - the go up and down but are not padded.
This is literally better than 600++ Herman Miller Aeron and it comes with headset included. Good lumbar support only thing lacking is can no lock the angle during tilting back.
Assembly was a breeze. It's comfortable in the way that a good office chair should be--I could never fall asleep in it but my posture is better and my back doesn't hurt at the end of the work day.
I started off my search for an office chair looking at the $1000 x-chair which I have never sat in. at $149 (on sale) I can't imagine what could be any better than this. Great chair very comfortable for sitting 8+ hours a day. Seems to be well made and should last for years. Highly recommend!