The only problem I had was DIY assembly of the back to the seat The instruction manual was ambiguous as how to connect the back to the arms while interacting with the seat. I struggled but somehow (magicly) it clicked into position and I was able to tighten the bolts. The chair is a pleasure to use and is now an important part of my world.
This chair is super comfortable to sit in for extended periods of time. I use it to work remote and spend as much as 4 hours without getting up. In addition it was super easy to assemble. All around I would say this was a great investment and would suggest it to anyone sitting for extended periods of time.