Dual density Nitrile Rubber/PU sole construction Removable extra thick PU insock SRC slip resistant and Anti-static sole Fuel and Oil resistant, Non-marking sole Flex zone technology 200J impact resistant composite toe cap and TPU toe cover Out sole heat resist to 300 degrees Celsius YKK Zip sided Individually boxed, carton of 5 Meets AS 2210.3:2019 Certified by BSI BMP No 622279