US/Canada

Ireland/UK/Australia

Circumference (mm)

5

J

49.3

5.5

K

50.6

6

L

51.9

6.5

M

53.2

7

N

54.5

7.5

O

55.8

8

P

57.2

8.5

Q

58.2

9

R

59.3

9.5

S

61

10

T

62.3

10.5

U

63.5

11

V

65

11.5

W

66.2

12

X

67.5

12.5

Y

68.8

13

Z

70.2