Bought this chair for my teen. He likes it. It is a good size chair for him. It can rock back and forth. The height is adjustable. Pretty easy assembly. We put it together using the Allen wrench that came with the chair. No other tool is needed. Overall - great chair.
This chair was easy to assemble and is reasonably comfortable. My only complaint is the spring tension is too stiff. I have it backed off all the way and I am still not able to tip back and relax.