The SCS 8881 Dissipative ESD 2-Layer Rubber Floor Runner, Blue with Ground Cord and Snap Fasteners, 0.065 in. X 48 in. X 24 ft. meets ANSI/ESD S20.20 required limit and the recommendation of work surface standard ANSI/ESD S4.1. The product is constructed using a top color layer of static dissipative neoprene rubber laminated to a bottom black layer of conductive neoprene rubber. Both layers are made from vulcanized synthetic rubber, which offers resistance to oil, grease and most common solvents. They offer increased resistance to heat and hot solder as compared to vinyl or olefin materials. Compatible with Constant Monitors.