The Progress MERINO HIGH SOX winter merino knee-high socks feature silver ions and Merino wool for excellent thermo-regulating properties. They are great for keeping the feet warm, but also prevent overheating, sweating and subsequent hypothermia of the feet. The fibres containing silver ions prevent the growth of bacteria and fungi, thus reducing unpleasant odours and maintaining the biological balance of the skin. The socks absorb and wick away moisture. They are designed separately for the right and left foot to ensure a perfect fit. They are great for all winter sports from cross-country skiing to ski touring, as well as for hiking in colder weather.