Size Chart and Fitting Guide

Kids

Thorlos Sock Size USA Shoe Size UK Shoe Size EU Shoe Size
9 13 to 4 11.5 to 2.5 29 to 35

Men

Thorlos Sock Size USA Shoe Size UK Shoe Size EU Shoe Size
11 5.5 to 8.5 5 to 8 38 to 42
13 9 to 12.5 8.5 to 12 43 to 47
15 13 to 15 12.5 to 14 48 to 50
17 15.5 to 17.5

Women

Thorlos Sock Size USA Shoe Size UK Shoe Size EU Shoe Size
9 4 to 6 2.5 to 4.5 35 to 37
11 6.5 to 10 5 to 8 38 to 42
13 10.5 to 13 8.5 to 12 43 to 47