Coolibar - Hats/Caps

Size Head circumference
M
57 cm / 22,44 inch
L
58,5 cm / 23,03 inch
XL
61 cm / 24,01 inch 
XXL 63,5 cm / 25 inch

Practical tip : to take the measurement, you should stand at the strongest point of your head. This is in the middle of the forehead, usually 1 cm above the eyebrows, where the hat will rest. Take the measurement with your head upright and the tape horizontal.