These KenetrekA(R) Mountain Guide starts with their legendary Mountain Extreme hunting boot design and takes it to the next level. Proven, field tested Mountain Extreme uppers. Aggressive, deep tread K-73 outsole. Comfort and durability every step of the way. 2.8mm full grain leather uppers, protective rubber toe cap One-piece vamp construction with no seams down the tongue Reinforced double and triple stitching in high wear areas 7mm nylon midsoles Anti-corrosive boot hardware swivels instead of breaking 400 gram Thinsulate insulation for comfort in cold weather WindtexA(R) waterproof/breathable membrane Custom K-73 outsole for traction and durability