Full-grain pigskin leather with 1000-denier nylon upper. Cement construction. Scent-Lok® fabric lining. 200-gram Thinsulate™ Insulation adds warmth. Removable full-cushion footbed. EVA foam midsole. Spider Web TPU slip-resistant lug outsole. Fiberglass shank stabilizes foot, weighs 75% less than steel and reduces fatigue.