Buy HJC C70 Helmet (X-Large) (SEMI-Flat Black): Helmets - ✓ FREE DELIVERY possible on eligible purchases. Since 1971, HJC has specialized in manufacturing motorcycle helmets exclusively. . The combination of this extensive specialized manufacturing experience, innovative ideas, and reasonable pricing resulted in HJC's success in worldwide markets. . It is HJC's continual goal to provide high quality, comfortable, and reasonably priced helmets to motorcyclists around the world.Advanced Polycarbonate Composite Shell:Lightweight, superior fit, and comfort using advanced CAD technology.Aerodynamic shell with large eye port for greater visibility.Lightweight.Two shell sizes."ACS" Advanced Channeling Ventilation System:Full front to back airflow flushes heat and humidity up and out.Micro Buckle:Quick-release and adjustable.Rapidfire™ Shield . Uses the HJC HJ-20M Shield and the HJ-V7 Sun Visor as a replacement or upgrade. . Since 1971, HJC has specialized in manufacturing motorcycle helmets exclusively. . . .