100% FR treated preshrunk cotton interlock knit, 7 oz (240 GSM) • Material and all components meet CGSB 155.20-2017 and NFPA 2112-2018 certified to UL • Meets ASTM F1506-2018, NFPA 70E-15 and CSA Z462-15 • ATPV 12 cal/cm² (Arc Thermal Protective Value) • ARC 2 Arc Rating Category • Thermal Protective Performance (TPP): 15.2 cal/cm² • Sewn with inherently FR thread • Left chest pocket • Self fabric crew neck collar • Henley placket neck opening with 3 buttons • Comfort self-fabric cuffs 100% Cotton FR Interlock 7 oz. Henley Shirts | Pioneer