Choosing your perfect size is easy as 1-2-3

Sizing for Women - Sizing for Men

Sizing for Women: Hats, Caps & Helmets

How to determine your size:

To determine your hat size, you need your head circumference. measure the thickest part of your head above the eyebrows. then you can match with appropriate size in the table.
if your size is between two sizes,
its better to choose the bigger one.
 
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