HJC Helmets CS-R3 Unisex-Adult Full Face Treague Motorcycle Helmet (Black/Grey, X-Large) D.O.T. Approved Advanced Polycarbonate Composite Shell: Lightweight, superior fit and comfort using advanced CAD technology HJ-09 Anti-Scratch Face shield: Hard coated 3D shield design provides 95% U.V. protection and Anti-Scratch coating RapidFire Shield Replacement System: Simple and secure shield ratchet system provides ultra-quick, tool-less removal and installation for efficient operation ACS Advanced Channeling ventilation system: Adjustable forehead and chin vents, and two rear exhaust vents creates a full front to back airflow flushing heat and humidity up and out