... s FR work trousers 1,180g FR cotton fabric, 2,breathable and with fire resistant function. 3,customer design accepted. Men's FR work trousers ... 1,Use 180g FR cotton ,100%cotton fabric.2,Simple but nice design,and customer design ... :widely used in industry of Oil and Petroleum Chemical, Electric Power and other industrieswhich need heat prevent. Men's FR work trousers