HJC RPS-10 Patriot Helmet Advanced P.I.M. (Premium Integrated Matrix) Fiberglass Shell Super lightweight shell is designed for superior fit and comfort using advanced CAD technology Max Airflow Top Vent 6-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 Ginko Extract and advanced silver antibacterial fabric. Crown and cheek pads are fully removable and washable Built-In Communication Speaker Pockets Rapidfire Shield Replacement System Simple and secure shield ratchet system provides ultra-quick, tool-less removal and installation for efficient operation Optically Superior Pinlock Prepared 2D Flat Racing Shield Clear Pinlock Lens Included Innovative center one-touch open/close locking system is designed for an extremely secure seal SNELL M2010, DOT Approved 3.39 lbs / 1,540 grams (approx, based on Size Medium Solid Color)