Chair is of excellent quality good lumbar support though not adjustable. Casters are quiet and the chair as well which is needed so that my wife can sleep in on the mornings that I arise earlier than her. At present chair is a good investment and only time will tell if the chair will exceed my expectations in the long run. The only concern that I have is that the lever actuating the gas shock is not spring loaded but hanging loose but that in itself is not a game changer.
Great value quickly delivered easily assembled (idiot proof instructions) and downright luxurious. You could bolt this to the floor of an intergalactic starship if you wanted to. I bought this for at home use but when I sit in it I feel empowered to fire the entire working world. Just be glad that I'm retired everyone but if you're called in on the carpet and the boss is seated in a "McCallum" just get a box and start clearing out your desk. Sorry about your luck it's not you it's just the chair.