Fr-tech 88% premium Cotton blend with 12% high-tenacity nylon , 7 oz (240 GSM) , Material and all components meet cgsb 155.20-2000 and NFPA 2112-2012 certified to UL , Thermal protective performance (tpp) value: with the spacer 8.6/ contact test 7.3 , 7763 - CSA Z96-15 Class 3 level 2 and Class 3 level FR when worn with Class 2 level 2 and Class 2 level FR top , Meets ASTM f1506-10a , NFPA 70E and CSA z462-15