HJC Contrast Men's CS-R2 Street Bike Motorcycle Helmet - MC-5 / Small The CS-R2 features a aerodynamic sculptured shell - wind tunnel tested to reduce turbulence, minimize drag and increase airflow A fully removable and washable plush nylex interior...liner & cheek pads! With aggressive lines and innovative features the CS-R2 has everything you could want in a hyper-sport helmet Advanced Aerodynamic Polycarbonate Composite Sculptured Shell: Lightweight superior fit & comfort using advanced CAD technology ''ACS'' Advanced Channeling ventilation system: Full front to back airflow flushes heat and humidity up & out Optically Supe-rior Anti-Scratch Face Shield: Hard coated 3D shield design