Size Chart
5.5 M US Women / 4 M US Men: 9.2in / 23.3cm
6.5 M US Women / 5 M US Men: 9.4in / 24.0cm
7.5 M US Women / 6 M US Men: 9.7in / 24.6 cm
8.5 M US Women / 7 M US Men: 10.0in / 24.6cm
9 M US Women / 7.5 M US Men: 10.2in / 25.4cm
10 M US Women / 8 M US Men: 10.5in / 26.7cm
10.5 M US Women / 9 M US Men: 10.7in / 27.3cm
11 M US Women / 10 M US Men: 11.0in / 28cm
12 M US Women / 11 M US Men: 11.3in / 28.7cm
13 M US Women / 12 M US Men: 11.5in / 29.3cm