Flame-resistant (FR) work coveralls by Bulwark

Flame-resistant workwear emerged in the mid-20th century as industrial safety standards evolved, particularly in oil and gas, electrical utilities, and welding industries. Bulwark, founded in 1946, became a leading manufacturer of FR protective clothing, developing fabrics that self-extinguish when exposed to flames. These coveralls represent essential personal protective equipment (PPE) designed to meet NFR 2112 and NFPA 70E safety standards. FR workwear appeals primarily to industrial workers, safety managers, and collectors of vintage occupational clothing. The Bulwark brand is particularly valued by professionals in hazardous industries for its durability and proven safety record. Vintage examples are sought by workwear enthusiasts and industrial history collectors who appreciate the evolution of worker safety equipment and the robust construction quality of mid-to-late 20th century American manufacturing.