HEADSTART HATS.co.ukText Box: Finding out your hat size If you do not know your hat size, measure around the largest part of your head with a tape measure above your brow. If you are in between sizes , go for the larger size. Hat Size Chart

IMPERIAL

METRIC

SIZE 

6  7/8

55cm

XXS

7

56cm

XS

7  1/8

57cm

SMALL

7  1/4

58cm

MEDIUM

7  3/8

59cm

LARGE

7  1/2

60cm

XL