Blue ESD Soldering Mat Kits are designed for electronic repair or assembly facilities to protect ESD sensitive components during the soldering process. These ESD mats offer resistance up to 240 degrees Fahrenheit. They are made of two layers – a blue static dissipative rubber layer at the top and a black conductive rubber layer at the bottom. Bertech’s ESD Soldering Mat Kits include the mat, a wrist strap and a grounding cord. These ESD mat kits offer excellent resistance to oil, grease and most common solvents, hot solders and soldering irons.They are also known as ESD Two Layer Rubber Mat Kits. Also available in green color.