Falke Men's Lhasa Rib Sock 33% Wool, 27% Viscose, 20% Cashmere, 20% Polyamide Imported Pull On closure Machine Wash Luxurious solid color sock with subtle rib pattern made of a premium yarn blend Soft cashmere combined with high quality merino wool provides the highest comfort and warmth Temperature regulating merino-wool Reinforced stress zones for optimum durability Lay flat to dry