I have put off buying a legitimate chair for my desk for months. I finally caved and decided it was time to spend some money on an office chair. This chair at this price point is fantastic! I can sit comfortably for hours. One thing to mention I am 5'10 and the headrest is low and not adjustable. You can rotate it about 140 degrees but because it is bolted to the chair at the top of the backrest there is no way to adjust the height.
I've had for about 3 weeks and it has helped with my lower back and hip pain. I bought because box said Rated for 5-10 Hours. And I agree its comfortable all day long. Depth of seat and height great for someone 5'3". I would buy again and recommend.
I needed more support and this delivers perhaps a bit much in the seat but I don't sit in it all day. I really like the head/neck bolster. The only thing missing would be a tilt for the seat. Arms adjust. all in all a great chair.