The SCS 8831 Dissipative ESD 2-Layer Rubber Worksurface Mat Kit, Blue, 0.065 in. X 36 in. X 48 in. 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 Continuous or Constant Monitors. Includes a wrist strap grounding system and installed snap fasteners.