Did a lot of research on these chairs and came up with this one.
It says 10 mins to assemble, if you are on your own make it half an hour or so. Don,t rush it as the instructions are easy and simple. The back is the challenge but take easy and you will be rewarded. Bum seat is hard at first but settles in within half an hour. Great chair ,great comfort and doesn't lean back too far from upright. Highly recommended.

1. Not a solid chair, have to tighten it often.
2. Lean-forward in a couple of weeks, very uncomfortable for long hour seating.
3. Not cheap for such an uncomfortable chair.