Bertech ESD Soldering Mat Kits are .060 inches thick and have two layers. The top layer is a green, static dissipative rubber layer laminated to a black conductive rubber bottom layer. These ESD Soldering Mat Kits provide excellent resistance to oil, grease, and most common solvents. They very light compared to our single layer and three layer mats. The Kit includes an ESD mat, common point ground cord, and an adjustable fabric wrist strap with a removable alligator clip. RoHS and REACH Compliant.