Arc flash leggings made by Chicago Protective Apparel. These 8 calorie leggings provide basic electric arc flash and fire resistance at an economic price. Compliant with NFPA 70E and ASTM F1506 requirements. CPA SW-401-8 leggings can be used along with arc flash coats or other fire resistant clothing. Great for job sites that sometimes require leg protection for more than one employee without necessity to get multiple garments to match each worker's exact size.