We compare the F5 (ECE) and the F5 Koroyd (ECE/DOT) helmets for off-road riding. They’re both super ventilated carbon fiber helmets, each with their own distinct benefits to help you enjoy your ride in the best way possible. Note: Lukas forgot to mention that the green Koroyd core structures also offer better impact energy absorption properties than standard EPS foam. The cores compress uniformly and don’t have the same rebound effect that EPS does, which helps reduce forces after an impact.
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