20108 is a flame-retardant and antistatic sock for the best flame protection if the accident occurs. The wool provides warmth and insulation in cold and wet weather, and absorbs moisture to ensure dry feet on sweatier days. A thin, antistatic tread at the toes insulates the foot against static discharge. Soft elastic mean that it sits comfortably on the foot throughout the working day. Certified according to EN ISO 15025:2016, EN ISO 1149-3:2004-2. Öko-Tex certified. Washing instructions: 40°C, should not be tumble dried. Material: 35% viscose, 35% wool, 24% flame-retardant polyester, 2% elasthane, 2% polyamide, 2% bekinox.