I am in a chair over ten hours a day. I tried several chairs and I always had problems with them. With this chair I no longer have these problems. Of course I get up every half hour or so and move around which is always what I have done.
Pretty easy to assemble. This chair is ultra comfortable with nice head and neck support. My wife liked it so much I bought one for her for the kitchen table in place of her kitchen chair. You won't regret buying this chair!
This is a solidly built and very comfortable chair but just note that if you are over 6'3" tall the headrest is not quite adjustable enough to be comfortable. No matter how you adjust it kind of forces your neck forward instead of making a nice place to rest your head. That said for the price buy the chair and leave the headrest off. Its a very good deal.
I've been working for the last 7+ years and I had to replace my old cracking leather desk chair with a full meshed chair with full back and head rest and I was planning on getting a Herman Miller Mirra 2 office chair but this chair is absolutely amazing and worth every penny from Staples. It is absolutely comfortable and super ventilated I am in heaven with this chair and I can sit in this chair for 12 hours with zero issues. I'd get another one if I could!