Advanced Polycarbonate Composite Shell. Lightweight, superior fit and comfort using advanced CAD technology – Anti-Scratch Pinlock ready Faceshield (HJ-09) New 3D design provides 95 percent U.V. protection. Side shield lock mechanism for a ultra-secure seal. For ultimate Anti-Fog system add a optional Pinlock insert (sold separately) – RapidFire Shield Replacement System. Simple and secure shield ratchet system provides ultra-quick, tool-less removal and installation for efficient operation. 2-Stage shield closure system with one-touch center open/close shield locking system makes for an extremely tight and secure seal. – ACS Advanced Channeling Ventilation System. Full front to back airflow flushes heat and humidity up and out. – SuperCool Moisture-Wicking Interior. Fully removable cheek pads and liner. Anti-Bacterial Fabric. All sizes of cheek pads are interchangeable in all helmet sizes – Meets or Exceeds SNELL and D.O.T. Standards Note Sizes 3XL-5XL D.O.T. approved only.