HJC Helmets CL-17 Streamline Helmet (Choose Size / Color) Lightweight polycarbonate composite shell is designed with advanced CAD technology for a better fit Optically superior, Pinlock ready, 3D design faceshield provides 95% UV protection and features an anti-scratch coating RapidFire shield replacement system lets you change shields quickly and without tools ACS (Advanced Channeling Ventilation System) provides full front to back airflow to help flush heat and humidity up and out of helmet DOT FMVSS 218 Certified