The La Sportiva Men's Nepal Cube GTX Mountaineering Boot isn't just for the high minded alpine adventurers amongst us. New this season, the Nepal Cube takes a lighter approach to versatile warmth in a mountaineering boot than its older sibling, the Nepal Evo GTX. While both boots use Gore Tex to guarantee your foot's dry ride, the Cube loses a full four ounces without taking away any warmth or capability. Whether you're summiting the Grand Teton, that is, performing telecom magic in the middle of winter, or trekking high and low over many miles, this leather boot gives you a dry and flexible ride. Rugged Idro Perwanger leather gets shot full of 3. 2mm silicone to create a robustly water resistant and flexible outer. An air injected rubber rand creates a durable connection between the top and bottom of this technical boot. Laces tease your toes and weave their way up the boot through locking D rings to help the boot keep a firm grip on your foot. The Gore Tex Insulated Comfort lining does more than guarantee waterproof and breathable kicking it adds heat to your hoofers so hiking across snow covered flats doesn't turn your toes into stubby icicles. In addition, the 4mm Carbon Tech honeycomb footbed uses air to further insulate your foot without adding weight to keep you high stepping for hours on end. Not a gossip, this tongue lets fresh air kiss your ankles while giving you the option to customize the boot fit with a removable piece. The 3D Flex tech improves your stability over contorted terrain. The graded polyurethane midsole starts at a whopping 2mm thick in the heel and tapers into a whisper of plastic by the time it reaches your toes. The Impact Brake System turns hard wearing Vibram into directionally opposed lugs to give your footsteps traction on the way up and the way down.