The instructions are fine to put the chair together but the actual assembly is difficult. The bolts are put in with an allen wrench but it is hard to get the holes lined up and tightened properly.
Have about 80 hours in it still comfy would have givin five stars but controls on chair are way out of reach. I'm six two and cannot reach tension control and barely the elevator control while seated not a biggie just have to roll back and get up to adjust lol.