Size Guide

If you are unsure of your size, you can request a guide using the form below and we'll post one to you.

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UKUS / CanadaFrance / RussiaSwitzerlandInside Circ mmInside Dia mm
E2 1/242.752.7542.7613.61
F344444.1414.05
G3 3/845.255.2545.1114.36
H3 3/446.56.546.0214.65
I4 1/447.757.7547.2515.04
J4 5/849948.3815.40
K5 T/8501049.6415.80
L5 T/251.7511.7550.5816.10
M652.7512.7551.8716.51
N6 1/2541453.1616.92
O755.2515.2554.5117.35
P7 1/256.516.555.7617.75
Q857.7517.7557.1518.19
R8 5/8591958.4718.61
S9 T/860.2520.2560.0019.10
T9 5/861.521.561.2919.51
U10 1/462.7522.7562.8920.02
V10 5/86323.7563.8420.32
W11 1/8652565.2220.76
X11 5/866.2526.2566.5421.18