Smartwool Socks Size Chart

Size USM USW EU UK
S 3-5.5 4-6.5 34-37 2-4.5
M 6-8.5 7-9.5 38-41 5-7.5
L 9-11.5 10-12.5 42-45 8-10.5
XL 12-14.5 N/A 46-49 11-13.5