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The D3 Fiberlite provides a lightweight fiberglass shell with wind tunnel proven aerodynamics and an efficient ventilation system. Deep EPS ducting optimizes airflow to keep your head cool. The fit is facilitated by the contoured and anatomical 3D cheek pads and the removable and washable Dri-lex liner. The 3D cheek pads also quick release for the removable emergency helmet. Thanks to the D3 Fiberlite, the most decorated helmet in professional racing is now available for runners looking for factory performance.