With more features and superior quality, the Black Stallion FR Cotton Welding Jacket F9-30C provides better protection for light welding applications. Black Stallion FR cotton fabric conforms to ASTM D6413 flame resistance and washable test methods. In order to meet ASTM D6413, a sample of fabric must self-extinguish with less than a 2-second after flame and less than 6" char length. Applies to an initial sample and after 25 commercial wash cycles (50 home washings).