I like the chair. The assembly required that I use a ratchet wrench with the correct Allen head adapter to successfully tighten the Allen screws. Fortunately I had the tools to do this.
The Hyken Technical Mesh chair is a super value for the price. It's far superior to many of the slightly less expensive office chairs on the market in that it provides hours of comfort - the mesh seat is cool the lumbar support is well designed and the headrest is perfect for laying back and relaxing. It is adjustable in all of the critical points; seat height armrest height tilt (it literally reclines) lumbar and headrest setting. It's very sturdy (no problem for my 6'-3" 225# frame) and wheels easily and silently. In short it's a terrific task chair for anyone who will spend hours at their desk.
I was at Staples for over an hour looking at all the different chairs. This one is amazing. After having it at home for over a week now its still great. Highly recommend.
I bought this chair two years ago. It has been the best work chair for my back; sciatic nerve pain has not returned since I have been using it! I sit in it up to 4-6 hrs a day with occasional little breaks 5-6 days a week. It is very comfortable for me. I did have to get used to the seat curving up at the sides (no no part of me hangs over the sides of the seat!) with a little more pressure at the sides of my thighs than I like but it does not cause any pain or discomfort. The mesh has held up well. It is so supportive and it is cool. It does not sag. I do wish the chair reclined more than it does; only about 45 degree angle. The back does recline separate from the seat so your feet stay on the floor. The head/neck rest does adjust height contrary to what others have said. And it rotates to adjust to a sitting perpendicular or reclining position. The lumbar adjustment slides up and down to position it for your back. The arms do not tighten up solid so they wobble a little and make noise. Recently the pneumatic seat adjustment stopped holding the chair in the height position you set. It slowly sinks to the lowest position. This chair has a 7 yr manufacturers limited warranty. I called the Staples.com CS warranty number 800-425-0049 and was promply helped by a courteous and knowledgeable person. A replacement pnuematic part is being sent to me and he emailed me a video that shows how to replace it. I am so please so far!