These are Florence Knoll Lounge Chairs, originally designed by Florence Knoll for Knoll in 1954. These particular examples were produced by Knoll Studio in the USA during 2019. The chairs features an exposed square tubular-steel frame, and are upholstered in black leather. The listed price includes one chair and there are three available to purchase. Each chair measures 32.25 inches deep, 32.25 inches wide, and is 31.25 inches high. They have a seat height of 18.25 inches, and an arm height of 23.5 inches. Overall, this chair is in very good condition with light wear. Please see photos.