Rugged protection and comfort you can depend on Slip and oil resistant Stampede rubber outsole Cowhide leather upper Nano composite toe meets or exceeds ASTM F-2413 safety standards J-Flex cushioned footbed with a triple density insole board Electric Hazard - Our electrical hazard rated boots protect you from open electrical currents from the bottom up. Tested up to 18,000 volts. The carbon nanotubes in our nano comp boots make it possible for the toecap wall to be thinner, allowing for more toe room and comfort while creating one of the strongest and lightest safety toes on the market. Justin Men's Bolt 11 Inch Nano CT Work Boot