HJC IS-17 Spark Full-Face Motorcycle Helmet (MC-5N, X-Small) Advanced Polycarbonate Compact Shell Lightweight, superior fit and comfort using advanced CAD technology; Impact absorbing, multiple density EPS liner One-Touch Integrated Smoke-Tinted SunShield (HJ-V7) Deploys quickly and easily even with gloves on; Three stage multiple positions with locking mechanism; Quick and easy removal and installation with optional tinted shields available Optically-Superior Anti-scratch Pinlock face shield (HJ-20M); New 3D design provides 95 percent U.V. protection, Anti-Scratch coating and can be upgraded with an optional Pinlock insert for the ultimate Anti-Fog system (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 ACS Advanced Channeling Ventilation System; Full front to back airflow flushes heat and humidity up and out