I bought this chair to replace the 20+ year old office chair I had in my sewing/craft room that the pneumatic cylinder stopped working. I specifically need a chair that has armrests that adjust in multiple ways due to the variety of activities I am doing and the ways my arms need support, and those are really hard to find at an inexpensive price point! I wanted a mint green chair because that is my favorite color & the color I just repainted my craft room in. I was SO HAPPY to find this chair that met both those criteria! The head rest is a nice bonus, I'm glad to have it, but that was not specifically a selection criteria for me.It was fairly easy to put together, but I'm a very handy woman. I did need to use a rubber mallet that was not inluded to get the casters firmly into the base, but other than that all necessary tools were included. It was well packaged. The instructions could have been more detailed, but they were clear enough for frustration-free assembly. I did it in under an hour, while watching a movie with my family so I was taking my time.One thing I thought was out-of-order in the instructions was when they tell you to attach the coat rack element to the headrest bracket. They have you do it after the bracket is installed, which means you're sitting on the floor trying to blindly drive the screws in from the underside. It would have made much more sense to screw it in first before the bracked is installed. But thats a minor thing on an optional element, so it doesnt really detract from the overall ease of assembly.I do wish the chair would have come with literature on how to ajust the seat / tilt / etc. I couldn't figure it out at first as it is different from other chairs I've had. But once I thought to go back to this Amazon listing the info was there, so problem solved.The chair is very comfortable and adjusts to suit me perfectly. I'm fairly average sized (5'-6" tall, 175 lbs). My daughter who is only 5'-1" & 110 lbs also finds it comfy. Hubby is only 2" taller than me, so not sure if a larger / taller person would find it comfortable or not.Overall I'm thrilled with it and would highly reccommend this chair!