Size guide: Sock All socks

Kids Socks

Sizes Socks Size USA France UK
612K 2K 6 1/2K - 9K 23-26 6K - 8 1/2K
10K1 3K 10K - 12K 27-30 9 1/2K - 11 1/2K
13K2 0 13K - 2 1/2 31-34 12 1/2K - 2
3512 1 3-5 1/2 35-38 2 1/2 - 5

Performance Socks Men / Women (Running & Training)

Sizes Socks Size USA France UK
2124 1 2 1/2 - 4 34-36 2 - 3 1/2
5-6 2 5 to 6 37-39 4 1/2 - 6
7812 3 7 - 8 1/2 40-42 6 1/2 - 8
9101 4 9 - 10 1/2 43-45 8 1/2 - 10
1113 5 11 1/2 - 13 46-48 11 - 12 1/2

Esentials Socks (Basic)

Sizes Socks Size USA France UK
3512 1 3 - 5 1/2 35-38 2 1/2 - 5
6812 2 6 - 8 1/2 39-42 5 1/2 - 8
911 3 9 - 11 1/2 43-46 8 1/2 - 11
1214 5 12 - 14 1/2 47-50 11 1/2 - 14
OSFM OSFM ONE SIZE (MEN)
OSFW OSFW ONE SIZE (WOMEN)
OSFY OSFY ONE SIZE (YOUTH)

Compression Socks

Sizes Socks Size USA France UK
5-6S 2 S 37-39
81S 3 S 40-42
910S 4 S 43-45
111S 5 S 46-48
5-6M 2 M 5 - 6 M 37-39 4 1/2 - 6 M
781M 3 M 7 - 8 1/2 M 40-42 6 1/2 - 8 M
910M 4 M 9 - 10 M 43-45 8 1/2 - 10 M
111M 5 M 11 1/2 46-48 10 1/2 11 M
5-6L 2 L 37-39
781L 3 L 40-42
910L 4 L 43-45
111L 5 L 46-48