Chair was easy enough to assemble with the instructions provided. The headrest if fine if you are a short person. I am 5'10" tall and with headrest fully extended the bottom grazes the back of my shoulders. I would hate to be a tall(er) person with this chair - would need to remove the headrest. Lumbar support is minimal and marginally adjustable. Chair is comfortable for what you pay but definitely not HumanScale quality.
Great chair very easy to assemble. Can't believe I waited this long to upgrade my office chair. The old one was leather and did not vent during calls I would get so sweaty and hot. Not with the Hyken mesh chair I can feel the air conditioning flowing through what a game changer!
This chair is so much easier to move than the heavy office chair I have used previously. The headrest and lumbar support are great and the size of the seat fits me perfectly.
The chair is comfortable in seating the back support is awesome which keeps your spine in correct position. Easy to setup and finally the with the money.