Named for the men who worked Duluth's legendary Iron Range - conquering harsh weather and rugged terrain to produce enough iron ore for a growing nation. Brawny yet broken-in supple 11.5-oz. Fire Hose cotton canvas takes on tough jobs in cold weather, stands up to harsh conditions. Washed for a broken-in feel, with a high-tech finish that repels the rain and stains encountered on the railroads or ore docks. Warm 55% acrylic/45% polyester berber fleece lining, even in the hand-warmer pockets. 9 useful pockets keep you well equipped and organized. A work vest with the mettle to get the job done.