Herman Miller Aeron Classic Mesh Office Desk Chair Size B Basic. This is a chair that has been completely refurbished (Checked for worn or broken parts and if found those parts were replaced with genuine Herman Miller Parts). There might be some very minor scratches on it but you would be hard pressed to tell it is used. It is the basic version. This is an excellent very comfortable ergonomic chair. Black With Graphite Frame. Color: Black graphite color. Wheels work on hard and carpeted surfaces. This is a great chair. Have also a Celle version available in other listing.