Fully compliant with CSA Z96-22 Class 1, Level 2 Fully compliant with ANSI/ISEA 107-2020 Type O, Class 1, ASTM D6413 (FR) Tested in accordance with test method CAN/CGSB-4.2 No.27.20 & ASTM D6413 flame resistance, self-extinguishing for momentary contact with open flame Heavy-duty FR-treated 300 denier Trilobal rip-stop polyester with PU backing gives superior abrasion, puncture, rip and snag resistance 2" Vi-brance