Tillman® Fire Resistant FR7A® Cotton Bib. 9 oz green fire resistant fabric – 100% cotton U.S. made Westex. ®. FR7A – fabric meets ASTM D6413-10. ASTM D6413-10 is used to determine a pass/fail criteria for ASTM F1506, which requires a maximum char length of 6 inches. Full hood with neck and chest drape. Hook & loop closure down front for easy on/off. Protects the wearer from sparks, light spatter, and sun rays in the head and neck area. Designed to be worn under a welding helmet or hard hat. One Size fits most.