Choose adventure with confidence. The Cerro KinetiCore helmet is fully-equipped for road and gravel riding, with a design that suits just about any style and advanced head protection technologies. It boasts a modern feature set including our proprietary KinetiCore technology that helps to manage impact energy, plus compatibility with LED lighting and winter riding accessories. That's why Cerro is an inspired choice for if you're looking to roam free across any route and through every season. Features: Next-level Technology: built-in KinetiCore offers additional protection from rotational impact in the event of a crash Comfortable, Stable Fit: Advanced TurnSys adjustable fit system and quick snap buckle ensure you're ready to ride in seconds Integrated Visor: Designed to help block the sun and rain from your affecting your field of view Eyewear-Friendly: Designed with eyewear in mind, so you can stash your shades in the helmet securely without the temple arms causing discomfort against your scalp Light It Up: The LED-compatible design makes it easy to attach the Universal Lazer LED light at the back of the helmet for enhanced visibility Winter-Ready: For brisk winter rides, add the soft fleece Winter Kit for a cold weather conversion (Kit not included with helmet.) CPSC 1203 COMPLIES WITH U.S. CPSC SAFETY STANDARD FOR BICYCLE HELMETS FOR PERSONS AGE 5 AND OLDER Full Size Range: S 52 - 56cm, M 55 - 59cm, L 58 - 61cm