''Czech climber Radek Jaros ascended the world’s second highest peak K2 and became the 15th person to conquer all mountains in the world higher than 8000m without oxygen. Before the K2 expedition, Radek spent two years recovering from the amputation of his frostbitten toes. He did not want to take any risks this time and used during the whole climb the 30seven® electric socks. Radek stated that he never felt so comfortable during a climb.''