Lazer Tonic Kineticore Helmet Next-level protection for every rider The Lazer Tonic Kineticore Helmet is Lazer's mid-level road helmet that brings the high-level technology from their top-of-the-line race helmets to the world of recreational riders. The Tonic boasts Lazer's proprietary Kineticore system, a revolutionary safety and sustainability system that reduces rotational and linear forces while maintaining a lightweight design with reduced plastic. When combined with the EPS foam core and durable polycarbonate outer shell, the result is a Virginia Tech 4-Star helmet rating, a high rating for crash safety. The Advanced Turn Sys system provides easy one-handed adjustability, while the 18 large vents offer excellent airflow in all conditions. Features Lazer's proprietary Kineticore system reduces both rotational and linear impact forces and is lighter weight and cooler while using less plastic than competitors Awarded a Virginia Tech 4-Star helmet rating for an excellent level of crash safety18 large vents for increased airflow Advanced Turn Sys system provides simple and secure vertical adjustability with the turn of a dial Eyewear storage compatible letting you stow your glasses at the front of the helmet when not needed SPECIFICATIONSCore Material EPS Foam Safety Certifications CPSC, EN1078Intended Use Road, Recreational Weight240g (size M)Special Features Compatible with optional universal LED tail light Sizing Size Small Medium Large Head Circumference (cm)52 - 56cm55 - 59cm58 - 61cm | Lazer | Tonic Kineticore Helmet Men's | Size Medium In Blue/black