HJC IS-17 Grapple Full-Face Motorcycle Helmet (Hi Viz/Silver, X-Large) Advanced Polycarbonate Composite Shell: Lightweight, superior fit and comfort using advanced CAD technology; One-touch Integrated SunShield: Smoke-tinted 3-stage adjustable SunShield deploys quickly and easily; Optically-superior Pinlock-prepared Faceshield: New 3D design provides 95percent UV protection, anti-scratch coating and is prepared for the ultimate anti-fog Pinlock insert; RapidFireII shield replacement system: Simple and secure shield ratchet system provides ultra-quick, tool less removal and installation for efficient operation; Glasses Groove can accommodate riders who wear glasses;