This is a Large Diamond Lounge Chair, originally designed by Harry Bertoia for Knoll in 1952. These particular examples were produced in 1971. The design features Bertoia’s iconic welded steel wire shell with a black frame, paired with a black seat and back cushion.The listed price includes one chair, and there are four available to purchase.Each chair measures 32.3 inches deep, 45 inches wide, and 28 inches high, with a seat height of 16 inches. These pieces do show wear from previous use including minor scuffs and surface blemishes. Overall, they are in good condition. Please see photos.