Size Guide

US Size

UK Size

Circumference (MM)

Diameter (MM)

3

F

44.2

14.1

3.5

G

45.5

14.5

4

H 1/2

46.8

14.9

4.5

I 1/2

48

15.2

5

J 1/2

49.3

15.7

5.5

K 1/2

50.6

16.1

6

L 1/2

51.9

16.5

6.5

M 1/2

53.1

16.9

7

O

54.4

17.3

7.5

P

55.7

17.7

8

Q

57

18.1

8.5

R

58.3

18.5

9

S

59.5

18.9

9.5

S 1/2

60.8

19.3

10

T 1/2

62.1

19.7

 

 

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