Giro Cycling Aeon Cycling Helmet Roc Loc 5This Aeon™ Cycling Helmet from Giro™ carries minimal weight and maximum ventilation.
Roc Loc® 5 fit system provides an ergonomically-tuned dial that won't pinch skin or pull hair. In-mold construction. Super fit engineering. 24 wind tunnel vents allows the helmet to breathe. Thermoformed SL roll cage. X-static padding keep the helmet feeling fresher for longer. Weighs only 222g.