The build out of the right arm is not as solid as the left arm. Now when you sit in the chair the right arm jiggles quick a bit whereas the left arm is solid. Just enough to bother you. We will have to see how the chair fares as time goes on.
This checked all the boxes for what I was looking for: all mesh so I don’t get hot even when sitting in it all day has a headrest and is able to lean back. It’s very comfortable. I actually fell asleep in it (leaned back position) and did not wake up with a crick in my neck. Assembly was straightforward and it came with only tool needed.