The FALKE(R) No. 6 Wool Silk Socks provide excellent comfort and unrestricted freedom of movement and feature the finest merino wool. Crew socks that sit at the calf. Self-adjusting welt cuff keeps your socks from falling down as the day goes on. Reinforced heel & toe provide added durability for high intensity activity. Soft wool and silk blend. 60% wool, 25% silk, 15% polyamide. Machine wash, line dry. Made in Germany.