Size Guide

Measuring for your head size is both an art and a science. You can use a tape measure (or a length of string that you will have to hold up to a tape measure) to determine the length.
Place the string or tape around your head about 1 cm above your ear, across the mid-forehead, completely circling your head. Hold the tape firmly, but not too tightly.
Basically you need to measure your head exactly where the hat will sit. If your measurement falls between sizes, choose the next largest size.
What we consider the final hat size is the circumference in centimeters. 
For any doubts you can always write here for assistance: info@superduperhats.com
 

Head Circumference

US Size

One Size

Others

Inches

Centimeters

Fitted

 

 

21 1/4

54

6 3/4

 

 

21 5/8

55

6 7/8

 

 

22

55.9

7

X

 

22 3/8

56.8

7-1/8

X

S/M

22 3/4

57.8

7-1/4

X

S/M

23 1/8

58.7

7 3/8

X

S/M

23 1/2

59.7

7 1/2

X

M/L

23 7/8

60.6

7 5/8

X

M/L

24 1/4

61.6

7 3/4

X

M/L

24 5/8

62.5

7 7/8

 

 

25

63.5

8