shark RACE-R PRO GP 06 Manuel D'utilisation page 18

FRONT VENTILATION :
2 FONCTIONS
1 - It ensures the air flow on the
internal surface of the visor to limit
the risk of mist. This function is
ensured permanently with the flap
open.
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2 - It also ensures an optimized air
inlet to your face. This ventilation has
an opening with 2 different positions
to adjust depending on your speed
and aerodynamics of your 2 wheels.