The Grinder Steel Toe features a waterproof membrane, a padded collar and tongue, and a durable, abrasion resistant nylon panel. Fully lined with breathable, moisture wicking mesh lining to keep feet dry and warm. Premium shock absorbing dual density PU/PU comfort insole. Flexible, oil and slip resistant rubber outsole. Traditional Goodyear welt construction. ASTM F2413-11 steel toe and electric hazard protection.