Bertech ESD Anti Fatigue Floor Mat Kits are made of closed-cell expanded polyvinyl chloride material designed to provide comfort and reduce worker's fatigue when used in static sensitive environment. These mats are not designed for chairs to roll over them. This mat is the most economical ESD anti fatigue mat available. The construction design of this ESD Floor Mat allows for effective static charge removal at a non-damaging flow rate and emboss pattern makes slip resistant. At the same time, it is known to maintain a consistent discharge throughout the life of the mat with no noticeable deterioration of effectiveness. They are resistant to degradation by inorganic acid, organic acids, detergent solutions, alcohol and mineral oil. Suggested service temperature is -200°F to +160°F. Mat comes with a heel grounder and grounding cord. RoHS and REACH Compliant. Made in USA.