Next-level Technology: built-in KinetiCore enhances 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 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.) Enhance your riding experience with comfort. Tonic KinetiCore is ready to go!