This chair is very sturdy and well built. The instructions were easy to follow and it only tool about 15 minutes to build. It is comfortable, yet supportive. The tilt will lock in two locations and the head support adjusts as well. The only complaint I have is the arm supports will only adjust for width with a wrench. They do not have a quick adjust to space wider, so make sure to set it where you want it when building it. All other adjustments are easy! I would definately buy this chair again.