I purchased the chair after sitting in all the models available at my local Staples store... it was on sale for a great price and it felt pretty comfortable-however after having it shipped to my house and putting it together (also fairly simple and not too much time) I sat in the chair at my desk for several hours. Even though the chair is adjustable in many ways depending on your height (I'm 6 feet tall) you might find certain parts of the chair to be 'not adjustable" enough. This was the case for me with the arms on the chair. They just didn't go down far enough for me to comfortably rest my arms on them while sitting at the computer. The main "problem" however as I saw in other reviews was the "front edge" of the bottom seat pad - when you sit down on the mesh it "sinks" below the foam cushioning under your thighs and the "firm" ridge over time can cut off some circulation to your legs. I good chair and a great price but probably better for some people than others.
I have a Herman Miller Aeron chair at the office. This one does not compare but then neither does the price. Yes for the price it's fine I suppose but I doubt I can do an 8-hour day on it day after day. I can feel the metal frame eating into my thighs after a few hours. (In all fairness this is an issue that all mesh chairs share except for Herman Miller chair -- and even then in a ten-hour day....) Also what's up with the arm rests? They look totally backward to me: They extend so far to the front that they bump against the desk and the only way to rest your elbows is to lean all the way forward. I kept checking the assembly instructions in disbelief but no this is the way the chair was designed. Do they use their own product?
The chair is nice and sturdy with good back support. The seat is fine but not cushioned or filled which makes it feel light and a bit different from standard chairs. This was easy to assemble.