20105 is a thin Coolmax® sock with air channels on the top that keep the foot dry and cool. Perfect for individuals who have active working days and whose feet have a tendency to become warm. Can also be used as a liner sock in the winter months, in combination with thick wool socks. Functional knitting and soft elastic mean that it sits comfortably on the foot throughout the working day. Öko-Tex certified. Washing instructions: 40°C, should not be tumble dried. Material: 64% Coolmax, 35% Polyamide and 1% Lycra.