CColor: Anti-static PU leather, Two colors, I. E. Blue and black, are available. Dimension:430*400mm(chair seat); 400*300mm(chair back) Height adjustable between about 440-600mm (supplied with 160mm Adjustable pneumatic rod) Surface resistance:103-106 O or 106-109 O. System resistance:109 O Specification: Plastic five-star-foot; high strength and durable nylon castor; Conductive metal chain