Many Bulwark products are made of durable FR Cotton, which is soft, breathable, flame resistant 100% cotton. Durable Bulwark FR Cotton garments are used in most areas involving ferrous metals, such as foundries, flame cutting, welding, etc. Also used in electrical utilities and chemical, oil, gas and petrochemical industries. Bulwark durable FR Cotton garments are permanently treated for life-of-the-garment flame resistance; the fabric is flame resistant, 9oz. twill 100% cotton and finished with an Indura ammonia cure. These garments feature a two-way concealed Nomex taped brass zipper with a gripper at neck, plus a one-piece, topstitched, lay flat collar and hemmed sleeve ends. Home wash and industrial wash is suitable for Bulwark FR Cotton products.