We were looking for a comfortable adjustable desk chair which could be assembled without arms. This worked out fine. Allen wrench for assembly was included.
If you're looking for an office chair with nice lower back support you might want to take a look at this one. Overall I really like the chair. The only thing I didn't care for were the wheels on it. They seemed to drag quite a bit when moving. Luckily I changed out the wheels with the wheels on my old office chair and now it moves around pretty good. I would definitely recommend this chair in spite of the wheels dragging a little.
This chair is very comfortable. I work from home a great deal and hours of sitting can be tiring. This chair has good lumbar support and adjustable height. I would recommend this chair without reservation.