NWT FALKE SKI socks SK5 SILK Falke Ergonomic Sport System SK5 SILK Sizes: 9-10, or 12.5-13.5 Four pair are available you may purchase all in bulk for $100 one pair is size 9-10 and three pair are size 12.5-13.5 Made in Germany 50% Polypropylene, 25% Silk, 25% Polyamide Original Price: $50.95 Discounted shipping.