Giro's Advantage 2 was honed to perfection in the heat of elite competition. It’s an amazingly sleek ProTour-proven time trial helmet with all the protection of your everyday-riding lid so you’ll be confident to shave precious seconds, or even more, off your personal best! Plus, it does it all with the awesome fit of Giro's Roc Loc 4 fit system and weighs an amazingly svelte 11 ounces