2.8 mm thick premium full grain leather uppers utilizing a one piece vamp with no seams down the tongue for better abrasion resistance and waterproofing * 7mm nylon midsoles with steel shanks for extra support in rugged terrain with heavy loads * Reinforced rubber sole guard for extra abrasion resistance * Wind-tex waterproof breathable flexible membrane and 1000 grams of Thinsulate insulation * Lightweight K-talon outsoles provide excellent traction