Powerline lives up to its name delivering maximum durability and aggressive outdoor traction with a steel shank for stability. Best for logging, rugged outdoor work environments or heavy-duty construction. -DRYShield™ waterproof construction keeps you dry in wet environments -3M™ Thinsulate™ Insulation for warmth with less bulk -Removable Pro Performance insole for cushioning and shock absorption -Shock-absorbing PU midsole inserts -Outdoor traction lugs with debris-releasing tread -Molded external heel protector -Lightly padded, protective collar -Goodyear leather welt -Heavy-duty tempered steel shank -Removable kiltie -ASTM F2413 M/I/C EH rated