The race-ready helmet tested at Wind Tunnel Laboratory - Advanced Kevlar and Fiberglass Matrix Composite Shell. Lightweight, superior fit and comfort using advanced CAD technology - For a perfect fit, FG-17 comes in 3 different shells. 1st shell for XS-S sizing, 2nd for M-L sizing and 3rd for XL-3XL sizing - All sizes of cheek pads are interchangeable in all helmet sizes - SilverCool Interior, Moisture-wicking and odor free liners with advanced anti-bacterial fabric - Crown and cheek pads are fully removable and washable - Superior Fog Resistant Clear Pinlock Max Vision Shield (HJ-20M). New 3D design provides 95 percent UV protection, anti scratch coating and is prepared for the ultimate anti-fog Pinlock insert (sold separately) - Innovative Center shield locking mechanism for a balanced, ultra-secure seal - RapidFire II Shield Replacement System. Quick, secure, tool-less removal and installation - ACS Advanced Channeling Ventilation System. Full front to back airflow flushes heat and humidity up and out - Meets or exceeds both SNELL and D.O.T. standards.