Built on the F5 chassis & adding to its engineered capability to provide all-day comfort, the F5 Koroyd adds safety & ventilation technologies to provide protection, reduced weight & enhanced ventilation & carries the DOT certification for on-road use. Challenging long-held industry methods, the F5 is leading the way in head protection technology & providing the best possible riding experience. Koroyd® is a next generation energy absorbing technology, engineered with a unique structure & innovative energy management properties. When impacted the Koroyd cores crush homogeneously, decelerating the energy from the impact. MIPS® brain protection system is a low-friction layer designed to reduce rotational motion from angled impacts the head. Construction Full KLIM® carbon fiber shell One of the safest helmets in the industry Hybrid impact protection combines multiple energy absorption technologies Koroyd® technology MIPS® technology Dual density EPS Extra large eye-port for max...