Boot designed for six thousand meter height peaks. Perfect insulation and thermal condition thanking the removable Inner bootee. Waterproof high profile gaiter and YKK waterproof zip. Cordura and Microfiber upper. Double density PU wedge for cushioning and lightweight and new Vibram Penia outsole with deep lugs for great grip. Automatic crampons compatible. Rubber Rand System to better protect from scratches and scuffs. Increased lightness because of the new Zamberlan Carbon Fiber "Mid-Soul".