I'm 5'10" and 185 lbs and this chair was comfortable for about 3 months. Now as soon as I sit down I get burning/numbness in my legs and rear end. I sit for at least 8 hours and the only chair I've found relief with is the Aeron (well worth the money for a 12 year warranty).
This chair is comfortable and adjusts to fit well to whomever is sitting in it. We bought several for our offices. Some folks are not fans of the headrests - but those can be removed. I personally love being able to sit back now and then to rest my head. We will definitely consider purchasing more as our other chairs need replacing.
This chair is very comfortable. I like the mesh seat so much better than other seats. Over time the foam sponge or whatever material deteriorates making you sit in a depression and your tailbone hitting bottom (no pun intended). With mesh that’s it - nothing else to catch you. The chair was easy to put together. The levers are marked as to what they do when pulled. Mine were switched so if I wanted to raise the chair height the lever that says which one to use would’ve tilted the chair instead. Watch out for that.
Decent chair. Don't know its durability yet but so far so good. However I cannot use the headrest at all. I am a female 5'5". Granted I have normal proportions so it's unlikely that I have unusually long torso. The headrest is only adjustable going forward or back not height wise. When sitting straight the headrest will pinch on my upper back/shoulder area causing discomfort. My male partner of 5'11" sat there and felt the same thing. In other words none of us can use this chair with the headrest on. I wonder if the designer of this chair used a model that's way shorter than 5'3" or one has an exceptionally short torso. I really wanted the headrest but the only way to keep it is if I sit slouched down which is bad for my back. I would give this chair a solid 5 star except for this reason a feature I really wanted but cannot have. I cannot return the chair now that it's assembled but I will continue to look for a better chair.