Size Chart

Circumference
(mm)		 Diameter
(mm)		 Europe USA &
Canada
48.0 15.3 48 4½
48.7 15.5
49.3 15.7 49 5
50.0 15.9 50
50.0 16.1 5½
50.6 16.3 51
51.2 16.5 52 6
52.5 16.7
53.1 16.9 53 6½
53.8 17.1
54.4 17.3 54 7
55.1 17.5 55
55.7 17.7 7½
56.3 17.9 56
57.0 18.1 57 8
57.2 18.2
57.6 18.3