HJC RPHA-10 Cage MC-2 Full Face Helmet - 2X-Large Advanced P.I.M. (Premium Integrated Matrix) Fiberglass: Fiberglass composite shell made from a blend of carbon fiber, fiberglass, aramid and organic non-woven fabric Max Airflow Top Vent: Six-Stage variable airflow is adjusted by glove-friendly dials on each intake vent ACS Advanced Channeling Ventilation System: Full front-to-back airflow flushes heat and humidity out of the interior SilverCool Plus Interior: Soft, moisture-wicking and odor-free interior with ginkgo extract and advanced silver antibacterial fabric. Crown and cheek pads are fully removable and washable Rapidfire II Shield Replacement System: Simple and secure shield ratchet system provides ultra-quick, tool-less removal and installation for efficient operation