Chair with Eco thermo-polymer shell available in several colors or Pure Eco thermo-polymer (100% recycled) available in sand color and 4-star aluminum swivel central base and self-return system finished in polished aluminum, white or black. Optional 4 casters. Av ilable options: Upholstered seat pad, upholstered shell pad, fully upholstered shell and parallel stitching upholstery. Fire retarda t version available.