FALKE Sock Sizing
FALKE Size Shoe Size (US) Shoe Size (EU) S 6 1/2 - 7 1/2 39 - 40 S / M 8 - 9 41 - 42 M 9 1/2 - 10 1/2 43 - 44 M / L 11 - 12 45 - 46 L 12 1/2 - 13 1/2 47 - 48 XL 14 - 15 49 - 50
See our complete fitting guide here