Women's Size Chart
US UK EU Length (cm/inches) Width (cm/inches)
W5 4 35 23.05 / 9.07 7.20 / 2.83
W6 5 36 23.90 / 9.41 7.37 / 2.90
W7 6 37 24.75 / 9.74 7.53 / 2.96
W8 7 38 25.59 / 10.07 7.57 / 2.98
W9 8 39 26.44 / 10.41 7.87 / 3.10
W10 9 40 27.24 / 10.72 8.07 / 3.18
W11 10 41 28.13 / 11.08 8.20 / 3.23
W12 11 42 28.97 / 11.41 8.17 / 3.21

Men's Size Chart
US UK EU Length (cm/inches) Width (cm/inches)
M8 7 41 25.91 / 10.20 8.50 / 3.35
M9 8 42 26.75 / 10.53 8.67 / 3.41
M10 9 43 27.60 / 10.87 8.83 / 3.48
M11 10 44 28.45 / 11.20 9.00 / 3.54
M12 11 45 29.29 / 11.53 9.17 / 3.61
M13 12 46 30.14 / 11.87 9.33 / 3.67