Just put the chair together the fact they actually put loc tite on the bolts is nice. Does come with an allen wrench which is the only tool you will need. You might need a hand putting on the back of the chair other than that took about 10-15 minutes to assemble. Directions were clear and easy. Chair is very comfy for the price point. Arm rest really are not adjustable per say but will move out of the way if you sit with your legs crossed any this is nice. Will update over time but looking forward to this chair being in my gaming room/office. I sit in there approximately 8 hours per day as I work and play in there.
This chair has great support. My previous chair hurt my back and after just a couple of days it feels much better with this chair! Would recommend this chair for someone who sits for 5 or more hours.
Easy to assemble comfortable...the best past is the arms that move out of the way for smaller spaces in getting it to fit under a desk. Well designed! Highly recommended.