The assembly was relatively easy for an older person, like me. The multiple adjustment levers helped in making the chair match my body. It is comfortable.
I owned a predecessor to this chair, purchased from Staples 18 years ago. I hope this new one lasts as long! This chair is very comfortable. The assembly was straightforward and the instructions were easy to follow. The screws you need for each step are bagged separately and clearly marked for that step, which is brilliant. The only complaint I have is that how to use the chair was not explained! I had to find a YouTube video explaining how to adjust the tilt angle of the seat. [Note that this is not a well-known feature, some reviewers here are complaining about 'sliding forward', etc., which can be solved by adjusting the tilt angle of the seat portion]. The angle of the seat back can be adjusted as well, and the height of the chair. The arms can be spaced closer in or further out - the arm distance adjustment is only made during assembly, however.
It would be great if Staples could provide instructions on how to use this chair that are as clear as the assembly instructions.
Overall, when deciding which chair to buy (a commitment, since I had my last desk chair for 18 years!), I considered style, price, function, comfort. This chair is not stylish, but wins hands-down in price, function, and comfort. (note I purchased during a half-price "sale" - the retail price of $300 seems excessive)
After two weeks the chair is creaking a bit. The seat is terribly uncomfortable after about an hour sitting on it. The arms although adjustable don't match the same height at the same setting. They also angle outward which is very uncomfortable. When I refer this chair, absolutely not.