Bertech ESD Chair Mat Kits are made of a rigid solid vinyl with a buried conductive layer, giving them consistent electrical properties. They provide superior physical properties along with the rigidity needed for today's office environment. ESD chair mats are resistant to degradation by inorganic acids, organic acids, reducing agents, detergent solutions, alcohols, and mineral oils. Suggested temperature range of -20 to 160 Degrees F. Available in gray color only with an embossed pebble pattern. Applications: Electronic Assembly and Manufacturing, Pharmaceutical Plants, Cleanroom Operation, Fiber Optics, Aerospace, and Hospitals. They are designed for use under chairs in an office environment or a manufacturing facility. Gauge/thickness: 0.190'' +/-0.010" ; 3/16''. Tensile Strength: 1500 lbs./sq. in. minimum. Elongation: 150 percent minimum. Durometer: 90 +/-10, Shore A. Mat comes with a heel grounder and grounding cord. RoHS and REACH Compliant. Made in USA.