Before 1986, bike helmets were largely unpopular due to being too hot and heavy. However, a significant change occurred when the U.S. Cycling Federation mandated helmet use, leading to the development of more user-friendly options. Jim Gentes, an industrial designer and avid cyclist, saw this as an opportunity. He founded Giro Sport Design Inc., aiming to create a helmet that was both safe and aerodynamic, inspired by NASA technology.
Gentes’ breakthrough came with the Giro Prolight, a helmet that drew on the NACA 6-series airfoil design, developed by NASA's predecessor during World War II to reduce drag in fighter aircraft. With the help of NASA aerodynamicist Raymond Hicks, this technology was adapted to bike helmets, significantly reducing drag and saving racers precious seconds.
The Prolight was made of expanded polystyrene foam with a removable Lycra cover and featured strategically placed vents to optimize airflow and reduce turbulence. The success of the Prolight led to subsequent models like the Aerohead and the Hammerhead.
The turning point for Giro came when Greg LeMond won the 1989 Tour de France wearing the Aerohead, which brought the brand international recognition. Over the years, Giro has evolved, but it continues to produce innovative bike helmets and other sporting gear.
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