Have been using this chair to work from home for almost a week. Slightly uncomfortable adjusting from my old chair but I believe that is a good thing for my posture as I relearn to sit correctly. I'm 5'11" 175 lbs when I sit straight up the headrest hits my shoulders but slightly inclined fits perfect. I have the arms and set back set as far out as they go (via assembly - can't be adjusted on the fly) and there is not much extra room for me to move around. Arm rests go up and down only seems fairly durable though. Have the tension torqued as high as it will go and still fairly easy to incline. Wish the seat could be adjusted more to slide in and out but it's enough seat to serve its purpose. Installation was fairly easy took about 10 minutes total.