The Mission offers classic styling and high-end performance at a great price. In-mould Aerocore construction uses Koroyd for impressive air circulation and exceptional energy-absorbing properties while remaining lightweight and comfortable. Active venting can be easily adjusted to control air circulation throughout the helmet for different weather conditions and personal preference. The sizing can be altered by simply twisting the dial at the back for the perfect fit.Size GuideSmallMediumLarge51-55cm55-59cm59-63cmClick here for more information on our Size & Fit GuideVenting: ActiveSizing System: AdjustableWeight: 450gConstruction: In-MouldSafety standard: eN 1077 Class B, ASTM F 2040 Additional SafetySmith’s Aerocore construction features Koroyd which was developed for the aerospace industry and provides superior impact absorption and ventilation compared to traditional helmet materials. The crumple-zone cylinders crush uniformly on impact absorbing energy whilst reducing the overall weight of the helmet. VentingAdjustable, easy to use, and extremely effective climate control, Smith’s low profile Single Regulator Ventilation System allows you to modify the amount of airflow and heat exhaust even with gloves. Simply slide the button on the top to open/close the vents.Airevac Ventilation allows goggles and helmets to function as one system, venting warm moist air away from the goggles, through the helmet climate control system and ultimately away from the head. Sizing SystemThe Adjustable Dial fit system control at the rear of the helmet is quick and intuitive to use. Simply twist the dial to tighten/loosen as required for a comfortable, snug fit. ConstructionThe performance standard for many years, in-mould construction creates a polycarbonate shell helmet with an ePS liner to maximise weight reduction. Lightweight, comfortable, and offering value for every ounce, in-mould construction is the flyweight winner.