Pretty Much Brand New Progeo Noir 2.0 I bought this about 4 years ago and barley used it cause I was scared of scratching the carbon. Seat size is 15.5″ width and 15″ depth. The full frame is carbon fibre no adjustments other than the backrest angle. I can get more measurements if needed just text me. Retail price on this chair is $15,550 canadian base model. Looking to get $5500 for it. Located in Vancouver