US UK EU JP
Men's Women's
S 5 - 7.5 6 - 8.5 4 - 6.5 37 - 40 23 - 25cm
M 8 - 10.5 9 - 11.5 7 - 9.5 40.5 - 44 25.5 - 27cm
L
11 - 13 12+ 10 - 12 44.5 - 47 27.5 - 29cm
XL
13.5+ 12.5+ 47.5+ 29.5+cm