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Oakley Helmet Size Chart

MOD 1, MOD 5 & MOD 3 Helmet Sizes

SmallMediumLarge
51 - 55 cm55 - 59 cm59 - 63 cm

MOD 1 Youth

SmallMedium
49 - 53 cm53 - 57 cm

Modular Brim / Goggle Fit Compatibility

Small MOD BrimLarge MOD Brim
A Frame 2.0Airwave
CrowbarAirbrake XL
OS XMAirbrake
O2 XSFlight Deck
E FrameFlight Deck XM
Windjacket 2.0Canopy
 Line Miner
 O2 XL