chair is comfortable and to put together was very simple. the screws were put in comopartments with card for every step of the of the process. it was very simple.
It doesnt quite live up to all the hype given that I have a Herman Miller Mirra at home (this doesnt even come close) but as a replacement for my work chair (company is too cheap to spring for a decent upgrade) it has all the right options. Decent lumbar support (though not adjustable). Like other people I found the headrest useless as it digs into my shoulders (even though I'm only 5"11). The armrests are a bit firm but I dont put alot of pressure on my arms. If you do however though this could be an issue for you. I will say that the limit is 250lbs. I'm 225 right now and probably 30lbs overweight but can already start to feel that chair is a bit too "narrow" as it starts to pinch the sides of my legs after 5 hours. I think this would be best for people that are smaller frame and under 210lbs.
A little involved to build from the box make sure you sit to fit before tightening all the screws. Very comfortable so far. I am at my computer for long periods of time and don't see the back fatigue I had with my old leather chair. With the mesh seat and back I don't think I will heat up as much this summer which is a good thing.