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 63⁄4 67⁄8 7 71⁄8 71⁄4 73⁄8 71⁄2 75⁄8
US Size 67⁄8 7 71⁄8 71⁄4 73⁄8 71⁄2 75⁄8 73⁄4
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 63⁄4 67⁄8 7 71⁄8 71⁄4 73⁄8 71⁄2 75⁄8
US Size 67⁄8 7 71⁄8 71⁄4 73⁄8 71⁄2 75⁄8 73⁄4
Inches 21,7 22 22,4 22,8 23,2 23,6 24 24,4
ENFI
ENFI