MatsMatsMats.com Anti-Static Fatigue Saver Mat, 2' x 3' x 3/8", Gray, Grounding Snap Installed Made in the USA. These mats are gray with pebble embossing and are 100% latex free. ESD (Electro-Static Discharge) mats are perfect for use in computer rooms, workstations, any area with sensitive electronics or electrical equipment, laboratories or chemical plants with ignition hazard, or any other area where static electric discharge poses a problem. Please note that anti-static/conductive mats are not used under the equipment, they are used in front of the equipment to dissipate a static charge that may be present on you before you touch the equipment. Static dissipative vinyl foam helps prevents static electricity buildup and damage from static electricity shock. Rugged, durable, ergonomically styled, 100% closed-cell PVC 3/8" thick anti-fatigue matting designed to provide comfort and relief from aching feet and legs. Material can be easily cut to fit any work area as needed. Beveled edges for increased safety. Snap for grounding cord installed on all mats. Humans quickly generate static electricity by walking or using chairs with casters. Then, with a simple touch, the electricity is passed to sensitive equipment such as computers. One shock can destroy internal micro-chips or cause a fire if in contact with flammable chemicals. Static dissipative and conductive mats are designed to protect sensitive equipment by quickly drawing the static off workers before they touch susceptible chemicals or apparatus. All conductive and dissipative matting should be grounded to be most effective. Ground cords are available to ensure static is no longer an issue for you. Specifications: Product Weight: 0.65 lb./s.f. Thickness: 3/8". Meets ASTM-150 Standard. Meets ASTM-D257 Standard. Meets ANSI ESD-S4.1-1990 Standard. Vinyl Type: S