Nice chair but this description needs to be very clear that it WILL NOT WORK for people over 6'-0" tall. The seat is very shallow and the neck rest is not height adjustable. Other family members can use it but not myself the primary reason for purchase. Please include height limitation in product description.
The mesh seat is comfortable the lumbar support is perfect and the head rest is a bonus. While the head rest does rotate front-back it does not adjust up-down. This is fine for me at 5'9" but if you are any taller it will not hit your neck properly. I knew this was the case from video reviews and expected it to match my height. The arm are adjustable too but I did not attach them. The chair is great without them if you also prefer no arms. It tucks under my desk better when not in use w/o them. The height adjustment has a a decent range. The rocking has sever perfect features: first it leans back without raising the front of the seat which is best for leg circulation there are three locking position in addition to free floating and finally the tension adjust ranges from very firm to loose. It was a great purchase.
I am 5' 7" about 250 pounds. My hips get caught on the arms of the chair when I get in/out of it. The lumbar support roll doesn't go up high enough to actually support the arch in my back. The headrest doesn't sit where I want it to and I can't position it in a good way. If I could return it and get the next model up (Dexley I think?) I would. I missed the 14 day return window though.