Specifications : Type : Anti~static Mat : Approx. 700mm x 500mm/27. 07'' Please note : It is manual measurement there may be 2~3mm error. The Anti~static Mat is acid resistant alkali~resistant anti chemical flux wear resistant easy clean. 0mm Anti~static Mat+Ground Wire+ESD Wrist for Mobile Computer Features : This product uses three~layer structure. Hope understanding. Electron collision damage is prevented. And item color displayed in photos may be showing slightly different on your computer monitor since monitors are not calibrated same. It can be applied to matting desktop line working mesa and so on achieves the effect of static electricity protective avoid devices damaged. Package Content : 1 x Anti~static Mat 1 x Ground Wire. Middle shock absorption layer. 700*500*2. 2mm/0. 68'' Thickness : Approx. 55 x 19.