How to measure your head

Our Size Label

UK Size

Centimetres

US Size

Inches

None

6

49

618

19.3

None

618

50

614

19.7

None

614

51

638

20.1

None

638

52

612

20.5

None

612

53

634

20.9

None

658

54

634

21.3

S

634

55

678

21.7

S/M

678

56

7

22

M

7

57

718

22.4

M/L

718

58

714

22.8

L

714

59

738

23.2

None

738

60

712

23.6

XL

712

61

758

24

None

758

62

734

24.4

None

734

63

778

24.8

None

778

64

8

25.2

None

8

65

814

25.6

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