11 COLLARBONE DESIGN A specifically developed protection feature is visible in the chin bar’s profile, where the base area has been specifically sculpted to give a relief section. The bottom profile is not only raised to clear the collarbone, but also, instead of the hard carbon shell coming into potential contact with the collarbone, it’s actually the softer EPP (Expanded Polypropylene) liner which extends beyond the helmet shell itself, and is covered by a more flexible rubber compound. This design provides a reduced chance of any sort of collarbone injury, one of the more common injuries in motorcycling.
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