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