I've been using this chair for 2 weeks and spend over 12 hours every day working in this chair. I've been very comfortable all day at work and the mesh breathes well and keeps me cool all day long. The chair specs indicate it is meant for 5-10 hour use but it seems to overdeliver! Great lumbar support and the mesh seat provides support contoured to my shape. I am 5 feet and around 240 pounds. Some complain that the seat is not wide enough for larger bodies and that the arms pinch them but the arms can be tightened at different widths during the construction to allow for a little more give. At the widest setting I don't have any problems. The neck rest is higher than my neck and is not adjustable but I don't feel that it inhibits my comfort using the chair. I could optionally take off the neck rest portion but as I said I'm just fine with it. I'm very happy with my purchase.
I recently purchased this chair for my home office as I now do all work from home. I am a court reporter so I know a lot about chairs and how they affect comfort throughout a long day. I couldn't be happier with my choice. The chair was very easy to assemble so easy that I did it myself which never happens. Love the head rest and everything about it. And the price was right which is always nice. 5 stars here.
So happy that I purchased this chair so comfortable for sitting at the computer all day Great Purchase and super fast free shipping received it the next day !