Description: Features: This product uses three-layer structure. Middle shock absorption layer. Electron collision damage is prevented. The Anti-static Mat is acid resistant, alkali-resistant, anti chemical flux , wear resistant, easy clean. It can be applied to matting desktop , line working mesa and so on , achieves the effect of static electricity protective, avoid devices damaged. Specifications: Type :Anti-static Mat: approx. 700mm x 500mm/27.55 x 19.68'' Thickness: approx.2mm/0.07'' Please note: It is manual measurement, there may be 2-3mm error. And item color displayed in photos may be showing slightly different on your computer monitor since monitors are not calibrated same.hope understanding. Included: 1 x Anti-Static Mat 1 x Ground Wire