Enjoy every ride Fast light secure ‐ the Strada KinetiCore is an all-round performer offering extensive protection to all levels of cyclists. Featuring enhanced comfort via the tailored-fit Lazer Scrollsys system and advanced ventilation management to keep you cool all you need to worry about is enjoying the ride. Features: 360 retention with ergonomic belt: Refine your helmet's fit by scrolling the easy-to-use Lazer ScrollSys belt for the ultimate fit Venturi ventilation system: Lazer's advanced ventilation system channels draws cool air into the helmet and expels hot air through the rear of the helmet to help cool you down when you're pushing hard No pressure points and more ventilation: The floating front headband increases airflow and eliminates pressure points to keep you more comfortable Eyewear docking silicone: Keep your eyewear safe when you're not wearing by storing them securely in the vent docking system LED light compatibility: Increase safety and visibility by attaching the Universal Lazer LED at the rear of the helmet via the Velcro Mount Lazer Aeroshell compatibility: Pop on the Aeroshell and protect your head from rain snow or mud. The Aeroshell can also be used to close the front and side vents for an aerodynamic advantage. The Aeroshell comes in S/M/L sizes Lightweight: 6% lighter than Lazer Blade+ MIPS M CE Reduced Plastics: 20g less plastics used than in Lazer Blade+ MIPS M CE Diverse size range: Available in 4 sizes making it easier to find the perfect fit for improved protection and comfort Weight: 280g size Medium Sizes: S 52 - 56cm / M 55 - 59cm / L 58 - 61cm / XL 60 - 62cm Rated 5/5 stars by Virginia Tech* *Since 2011 Virginia Tech have been providing unbiased helmet ratings that allow consumers to make informed decisions when purchasing helmets. Their impact tests evaluate a helmet's ability to reduce the linear acceleration and rotational velocity of the head resulting from a range of head impacts a cyclist might experience. Helmets with more stars provide a reduction in concussion risk for these impacts compared to helmets with fewer stars.