Let start with the positive. Easy to build. The seat reclines and and the chair rises and falls nicely and the arm rest move up and down nicely. This was not thick people freindly the seat was really uncomfortable I bought a seat cusion. If the other part so the chair was not working  properly I would return. I definitely want to change my review the leg on the chair is bent somehow. I was sitting in the chair and went to roll a little bit over to the other side of my office nearly fell over on further inspection one of the legs on the chair is turned ever so slightly. And now and time I lean on that side or the leg ends up on the side I almost fall over I am gonna give it one star since I can't give it zero.