These are Catifa 53 Desk Chairs, originally designed by Lievore Altherr Molina in 2013. These particular examples were produced by Arper in Italy in 2020. The chairs are comprised of a 4 star aluminum pneumatic base with a plastic shell seat upholstered in grey fabric. The listed price includes one chair and there are four available to purchase. The Catifa 53 measures 25.625 inches deep, 25.75 inches wide, and 30.125 inches high. The chairs show minimal wear and overall are in very good to excellent condition. Please see photos.