Size Guide

Place the string or tape around your head just above your ear all around your head across the mid-forehead, without holding  the tape too tightly.
 
O/S = One Size 
KN O/S
Centimetres 55 56 57 58 59 60 61 62
Size  S S/M M M/L L L/XL XL XL
UK Size 634 678 7 718 714 738 712 758
US Size 678 7 718 714 738 712 758 734
Inches 21,7 22 22,4 22,8 23,2 23,6 24 24,4
Size Guide
Place the string or tape around your head just above your ear all around your head across the mid-forehead, without holding  the tape too tightly.
 
O/S = One Size 
KN O/S
Centimetres 55 56 57 58 59 60 61 62
Size  S S/M M M/L L L/XL XL XL
UK Size 634 678 7 718 714 738 712 758
US Size 678 7 718 714 738 712 758 734
Inches 21,7 22 22,4 22,8 23,2 23,6 24 24,4