Designed in close collaboration with international mountaineers, the sock is dedicated to those who face high altitudes because it is able to counteract low temperatures even at the highest altitudes and in the most extreme climatic conditions. Made with high percentages of fine Merino wool, it guarantees perfect body heat retention and effective transpiration, even in wet feet, while the AccapiFIR fiber component optimizes the peripheral microcirculation, favoring the natural thermoregulation of the foot.