Details La Sportiva Trango Tower Extreme GTX Men's Mountaineering Boot The Trango Tower Extreme GTX is an insulated, waterproof, lightweight mountaineering boot for single day ice and high alpine objectives. Weight: 731g Durable abrasion resistant uppers with Honeycomb Guard™ inserts in high-wear zones 3D Flex™ ankle for longitudinal lock out and lateral flexibility Collar tip gaiter for additional protection and warmth LAST: Trango UPPER: High tenacity Nylon® water repellent with abrasion resistant Honey-Comb Guard™/ FlexTec 3/ Microfibre + Light PU Thermal adhesive/ Vibram® rubber rands LINING: Microfibre/ GTX® Performance Comfort INSOLE: 9mm Insulated IBI-Thermo MIDSOLE: 6-7mm TPU midsole with PU inserts for full crampon compatibility SOLE: Vibram® "One" by Vibram® (exclusive) with Impact Brake System™, with sticky rubber and edging platforms Made in Italy Specifications Trango Tower Extreme GTX Men's Mountaineering Boot