The Exterior Is Waterproof And Crafted From Quality Leather For Protection In Wet Conditions And It's Built For Comfort With The J-Flex Flexible Comfort System That Guarantees Lasting Support Throughout The Day. Its Rubber Outsole Offers Traction On Various Surfaces And Is An Astm Electrical Hazard Rated Boot That Provides Protection From Open Electrical Currents Up To 18,000 Volts.