This highlights flawlessly the purpose from the helmet as it was worn on all but the time demo stages, balancing aerodynamics for the flat phases and ventilation to the hilly levels in the French heatwave. The shell is Fiberglass and DuPont™ Kevlar® fiber building, using an aerodynamic shell profile and https://motorcycle-helmets70246.blogofchange.com/27016114/the-basic-principles-of-biker-helmets-uk