Details La Sportiva Olympus Mons Cube High Altitude Mountaineering Boot The Olympus Mons Cube is the ultimate technical boot for Himalayan mountaineering, arctic crossings and use in extremely cold environments. It adopts the most advanced solutions available on the market to guarantee warmth, lightweight, a quick fit, safety and water repellence for the mountaineer. Gaiter: water repellent; Stretch Cordura®, Extremely high abrasion resistant fabric with UltraSonic Welding technology and internal heat sealing; Inner water repellent gusset Inner boot: High tenacity Nylon uppers; PE with different densities; Thermo-reflective aluminium. Lacing: Double Boa® Fit System in the upper part and in the lower part of the shell for differentiated lacing Removable double bootie: High cut outer layer; 6 mm PE + EVA Single Density with Flex Zone and double Velcro closure low cut. Inner layer: 4 mm PE + EVA Single Density Insole: Insulating carbon HoneyComb 3 mm, Gold Insulation Aerogel 3 mm by PrimaLoft® Midsole: TPU 2 mm polyurethane with differentiated thickness at the toe and heel for attaching the crampon, front insert for tech ski-alp binding Sole: Combination of Vibram® Litebase and Vibram® MorFlex® Expanded EVA for maximum weight reduction  Made in Italy Specifications Olympus Mons Cube Mountaineering Boot