The seat and back of this chair are exceptionally comfortable and supportive even after 8-10 hours of sitting. However the headrest sat too low and didn't offer enough height adjustment options so I had to remove it in order for it to not dig into my shoulders (I'm a 6ft. 200lb male). I'm a little disappointed in my purchase because the headrest was one of the features (besides a mesh back and seat) that I was most looking for in a chair.
I am only giving this review one Star. The reason is I was not informed at the time of purchase that the chair would require assembly upon delivery. It arrives today thus unsure of the outcome.