Great chair. Easy to build. High quality stitching. Firmer than average office chair. Be very careful with the tilt levers when building, they can cause injury. Cut my arm pretty bad but it was my own fault. Can really feel this chair improving my posture and relieving back stress.
Update: After a few months of use the chair itself is holding up quite well. Still firm and comfortable. However, the strap on the headreset pillow broke off and I had to sew it back together. I had to make the strap a bit tighter so I am afraid it will just break off again in time. Trying to find a replacement for it but not sure if that is possible. Keep that in mind! I am leaving as 5 stars because it is probably my fault pulling the headreset pillow too far down and putting too much stress on the strap.
Update #2: Contacted anda seat about the broken strap on the pillow. They promptly sent me a new set of the headrest pillow and the lower back lumbar pillow free of charge. Amazing company!