These are Eames Aluminum Group Management Desk Chairs, Model EA335, designed by Ray and Charles Eames for Herman Miller in 1958. These particular examples were produced in 2014. The design features a cast aluminum frame with a pneumatic adjustable 5-star base on casters. Their seats are upholstered in VZ14 Parchment from Vicenza, which is an Austrian leather. The listed price includes one chair and there are multiples available for purchase. Each chair measures 21.25 inches deep, 22 inches wide, and 33 inches high. The chairs show light signs of wear, but overall are in very good to excellent condition. Please see photos. The arms are in terrific condition.