HJC RPHA-10 Full-Face Street Helmet (Matte Black, X-Large) Max Air-flow Top Vent: Variable air flow is adjusted by glove-friendly dials on each intake vent A matrix of Carbon Fiber, Aramid, Fiberglass and Organic Non-Woven Fabric create a strong, lightweight shell designed for superior fit and comfort using advanced CAD technology RapidFire Shield Replacement System provides ultra-quick, tool-less removal and installation for efficient operation; Pinlock-prepared 2D Flat-Racing Shield with included Clear Pinlock insert; One-touch open/close locking system for a secure seal Advanced Channeling Ventilation System: Full front to back airflow flushes heat and humidity up and out; Advanced wind tunnel testing, resulting in absolute smooth air flow both inside and outside; Low wind resistance and maximum ventilation SilverCool Plus Interior: Premium soft feel with Ginkgo Extract, moisture-wicking and odor-free interior with advanced silver anti-bacterial fabric; Crown and cheek pads are fully removable and washable; Meets or Exceeds SNELL and D.O.T. standards