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Named as Prowell's 1st pure road-racing helmet, the R66 is
awesomely lighter and stronger. The FVS (Frontal Vortex
System) on the top not only effectively increases the
frontal air intake area, but induces a strong vortex
inside the helmet. The combination of these two
effects establishes a totally new ground-breaking
ventilation system packed in to a very sleek
aerodynamic profile.


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