TECHNOLOGIE: ROBUR - Impact-absorbing hollow-core fibres for reducing pressure and impact thanks to enclosed air chambers. MERINO WOOL - Soft, elastic and extremely durable sheep’s wool. Warms and creates a pleasant feeling on skin. SILVER NODOR® - Has a tightly woven surface made of 99.9 % pure silver. Water is not absorbed and is instead drawn away from the skin to the outer layer of the sock where it can easily evaporate.