Ideal for climbing on mixed terrain, the La Sportiva Nepal Cube GTX is a lightweight, technical mountaineering boot built with state of the art technology to offer plenty of warmth and comfort without sacrificing performance. Gore-Tex Insulated Comfort membrane provides waterproof breathability as well as warmth. Highly insulating Carbon Tech honeycomb insole with 4 mm EVA is lightweight, stiff, and low profile. Innovative 3D Flex ankle system allows multidirectional ankle articulation. Removable tongue with incorporated ventilation system gives the option of adjusting the fit to any foot. Upper is made of 3.2 mm silicone-impregnated Idro-Perwanger Roughout Leather with air-injected rubber rands for incredible abrasion resistance and durability. 2 mm polyurethane midsole is graded for crampon attachment. Re-soleable Vibram sole with IBS (Impact Brake System), developed in collaboration with Vibram, is designed to soften impact on hard ground. Board lasted 801216160973 20211500083 11I