Original Herman Miller Aeron chair with graphite/black frame and carbon/black mesh seat and back in Size “B” (medium). The chairs were pulled from an office conference room, where they had very minimal use, and are in excellent condition, showing little (if any) wear. The chairs are not refurbished – they are very lightly used, and in excellent condition. Features height adjustable arms, pivot/swivel arms, forward tilt, tilt limiter/lock, and adjustable lumbar support. These chairs feature the “clip” adjustable arms (shown in 6th picture). Other chairs with the “thumbwheel” adjustment are 10-15 years older.