All GRIFFINS models are designed for both genders.  The same model is adapted to female numbering and male numbering.

Sizes Guide - Woman

U.S.A U.K EUROPE
4 2 35
5 3 36
6 4 37
7 5 38
8 6 39
9 7 40
10 8 41
11 9 42

Sizes Guide - Men

U.S.A U.K EUROPE
6 5 39
7 6 40
8 7 41
9 8 42
10 9 43
11 10 44
12 11 45