Performance:anti-slip,firerelatrdant,heat-resistant,insulation acid,and alkai proof,ect IMPA Code ... :33 09 04 Size:36-50 Features of fire proof boots:Detailed Product DescriptionThis one ... ,anti-smash,anti-piercing,fire-relatrdant,heat-resistant,insulation acid,and alkai proof,ectOther infomation1.Always use ... rescue, general fire rescueand so on acid resistant boots