Aeron chair remastered “new model” size (B) fully loaded with all adjustment by Herman Miller. It’s the best and most admired and recognized ergonomic office chair ever made. Its innovative design and support for a range of postures, activities, and body types, has made and kept Aeron an icon. Combining a deep knowledge of human centered design with cutting-edge technology. The chair is engineered with state-of-the-art adjustability, to help you maintain the optimal seating posture. Adjustable seat height from 16″ to 20.5″. Adjustable posture fit SL pads provide lumbar support and stabilize the base of the spine. Fully adjustable arms “height, depth, and angle” allow for a custom fit. Harmonic tilt supports the way you naturally move, for a smooth and balanced recline. Adjustable tilt tension and upright back lock. Medium chair size: B. Multi-Surface casters with quiet roll. Base and frame color: Graphite. Breathable mesh fabric adapts to everybody and keeps you cool and comfortable. Weight capacity: 350 lbs. Designed by: Don Chadwick and Bill Stumpf. Overall Dimensions: Height 41″ x Width 27″ x Depth 16.75″ x Base diameter 26.5″ x Weight 41 lbs. I recommend that you look up “uship. Com” or “plycongroup. Com”.