A lightweight technical boot for all alpine pursuits, the La Sportiva Men"s Trango Extreme Evo GTX Mountaineering Boot is designed for high standard performance on mountain big walls, alpine routes, waterfall ice, and mixed routes. A GORE-TEX Duratherm lining makes the boot completely waterproof and warmer for high altitudes and extreme cold. The patented 3-D Flex ankle hinge system, and sticky rubber rand gives the Men"s La Sportiva Trango Extreme Evo GTX nimble climbing characteristics.