non-slip , anti- shock , puncture resistance , 

flame retardant , heat , radiation, anti-cut , oil , anti-acid , anti-smashing plate.

Bottom puncture greater than or equal 100N,

resistant to voltage equal to 5000 volts, 

for the disinfection of foot canvas lined interior lining , lined with sponge bottom .  http://www.qhrainboots.com/