A serious boot for rugged terrain, the new 10 inch Mountain Extreme NI is made with a one piece vamp of 2.8 mm top grain leather on top of stiff nylon midsoles with high traction K-Talon outsoles. Waterproof, breathable Windtex membrane keeps you dry and because they are non-insulated you will stay comfortable in warmer temperatures. Sure to become your favorite boot due to its awesome support, what will really surprise you is just how lightweight and comfortable they are. 3.9 lbs.