HJC CS-R2 Thunder Helmet Features Advanced Polycarbonate Composite Shell Lightweight, superior fit and comfort using advanced CAD technology Aerodynamic shell with large eyeport for greater visibility Advanced Ventilation System Adjustable forehead and chin vents Two rear exhaust vents Chin bar helps to diminish shield fogging Comfortable Interior Plush, brushed Nylex interior Removable and washable Rapidfire Shield Replacement System Quick, secure, tool-less shield removal/installation system Aerodynamic, flush-mounted shield fit for reduced turbulence HJ-09 Anti-Fog Face Shield Anti-fog, scratch-resistant hard coating Optically correct 3D design Rated to block 95 of harmful UV radiation Built-in Communication Speaker Pockets 3.48 lbs / 1580 grams based on size medium