Helios Fit System

The Helio Helmet's Roc Loc 5 Air Fit System enhances a helmet's ventilation and cooling power; as well as the fit; comfort and stability while you ride. You can custom tune both the fit tension and the fore-aft tilt of the helmet in seconds using a single hand; and you can tune the contact points at the rear of the head individually; for a truly custom fit. This fit system is only compatible with the Giro Helios Spherical.