The C10 is an all-new competitively priced full-face helmet for riders of all ages that value quality and safety, offering a lightweight superior fit thanks in part to its Advanced Polycarbonate Composite shell that was designed using advanced CAD technology. Combined with a wide-view optically-superior face shield and its improved “ACS” Advanced Channeling Ventilation system that allows full front-to-back airflow to flush heat and humidity up and out, the C10 provides a safe and comfortable ride no matter the conditions. With sizes ranging from 3XS to 2XL, the C10 delivers the same great protection for both youth and adult riders alike. VISOR / SUN SHIELD OPTIONS HJ-34P ANTI-FOG PINLOCK READY VISOR HJ-34P MIRRORED ANTI-FOG PINLOCK READY VISOR PINLOCK DKS463 REPLACEMENT PARTS TOP / LOWER / REAR VENT GEAR PLATE BREATH DEFLECTOR CHIN CURTAIN CHEEK PADS HEADLINER LOCKING SYSTEM MICRO BUCKLE STANDARD ECE 22.06 Meets or exceeds ECE 22.06 approved. Testing includes energy attenuation, penetration resistance, chin strap structural integrity and labeling requirements for on-road motorcycle helmets YOUTH TO ADULT SIZE The C10 replaces both previous CL-Y and CS-15 helmets to offer a perfect fit from 3XS to 2XL and cover youth to adult sizes. ACS ADVANCED CHANNELING VENTILATION SYSTEM HJC's helmets, along with our technology, have added experience in designing the MotoGP race helmets to have the best technology in aerodynamics and ventilation and related fields. HJC's helmets provide the airiest helmets on the market. Experience the best performance with your HJC helmet.