If you feel like you've got too much on your head when you're riding, try a lighter helmet. Giro's Prolight helmet is a race-level helmet that presents the new standard for lightweight and streamlined design. It has a superlight In-Mold shell with 25 aerodynamic vents to channel maximum airflow over your head. It also sports the Roc Loc SL fit system with Super Fit sizing, so you create a fit that is so custom, you'll barely feel the helmet at all.
In-Mold construction provides strength, integrity and is so lightweight, you'll have to remind yourself that you've got a helmet on at all
25 Wind Tunnel vents with fully optimized internal channels thrust cool, fresh air over and around your head while forcing heat and stale air out