Finland’s UpHillSport brand takes their design inspiration from the challenging conditions of Finnish winter, constantly trying to meet and exceed the demands of the dry, cold air and snowy environments. Their UpHillSport 4 Layer Merino Wool Compression Ski Socks are, despite being a relatively fine, mid-weight (84gm), rated to M5, the highest thermal grade, suitable keeping feet warm even while alpine skiing. These knee high “Ouna” alpine ski socks are ideally designed for tight ski boots, constructed with a combination of a padded calf to the leg shaft, with leg compression that gives a boost to blood circulation. The foot has a cushioned multilayer structure based around merino wool to optimise warmth, breathability and durability, with a thin, ventilated upper, fitted heel and arch grip for support. All UphillSport\'s merino wool products are made in Finland and are mulesing free.