Demanding jobs require rugged FR protection. These heavyweight modacrylic trousers are inherently flame-retardant - the FR properties won't wash out over time. Durable even after countless industrial launderings. Reinforced fabric provides strength in high-wear areas. An elastic waist and gusseted underarms give full freedom of movement for working. Offers welding protection against sparks and spatter. Limited chemical splash resistance too. Serious insulation from electric arc flash. Loaded with design features for all-day comfort on the toughest worksites.