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You wanted a lighter helmet, a cooler helmet, a better helmet—so Giro created one. Starting with a full roster of Giro's best features, they optimized every component in the Aeon including the shape of the helmet itself, reducing weight by 28 percent compared with its predecessor. Giro also sculpted massive vents with interior channeling for best-in-class cooling power and integrated the adjustability and comfort of Roc Loc® 5, for a luxurious feel with all the performance you need.