Really happy I bought this chair. I was able to try out a few in the store and this one felt the comfiest to me. It has resolved my main problem with other chairs which was that my tailbone hurts a lot after a few hours. With this chair I can sit all day for maybe two days without difficulty. I didn't put it together but from what I gather it was pretty easy. One star knocked off because the chair pushes to return to straight up even with the tension dial pretty soft so I have to have something to push my feet against to be able to stay as reclined as I want it (which I grant you is probably more than average). That said I'm pretty sure other chairs of this type would have the same issue. Would buy again.
This chair is low quality. Basically not rated to recline in any way. If you do it will not return to upright over time. My brother inlaw warned me not to get it but I figure it was comfortable. Ended up breaking. I couldn't find a way to lock the chair upright either. Buy at own risk.