The Giant Rivet was expertly developed in the wind tunnel & has an incredible track record proven by its race wins against the fastest pro sprinters in the world. Perfect for competitive riders who seek every aero advantage without compromising fit, ventilation & weight, the Rivet aero road helmet supplies you with a winning edge. The Rivets Cinch Pro fit system means that you can achieve the optimal fit & position, & you are also able to micro adjust while on the move to optimise this fit & comfort even more. The helmets ultra-deep internal channels direct a cooling airflow over your head to ensure that even on the toughest of rides, your head wont overheat. Cinch Pro, optimal position Y elements strap system Computational fluid dynamic aero design EPS density, & super-tough polycarbonate shells