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Oakley Helmet Size Guide


Size Inches
S 20 - 21.5"
M 21.5" - 23"
L 23 - 24.5"
XL 24.5 - 25.5"


Size Centimeters
S 51 - 55cm
M 55 - 59cm
L 59 - 63cm
XL 61 - 65cm

How to Measure

Follow the instructions below and compare your measurements with the size chart

Head Circumference

Measure the head circumference just above your ears and eyebrows. The helmet should sit low, level on your head and it should not be tilted.

Tip! Use a soft measuring tape, to ensure that the product fits properly. Alternatively, use a piece of string and then measure it against a ruler

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