Antistatic mat, also called ESD mat. An antistatic floor mat or ground mat provide a path to ground for a charge from conductive or static dissipative items placed on the mat. These mats are available in foam, rubber and vinyl material. Antistatic Mats are made of single layer homogeneous polymer mix, two layer static dissipative rubber. The mat would need to be grounded (earthed). This is usually accomplished by plugging into the grounded line in an electrical outlet. It's important to discharge at a slow rate, therefore a resistor should be used in earthing the mat. The resistor, as well as allowing high-voltage charges to leak through to earth, also prevents a shock hazard when working with low-voltage parts. Some ground mats allow you to connect an antistatic wrist strap to them.