Polycarbonate composite shell New lower mouth and top vents provide better air intake Increased ventilation with enhanced defogging New, wind tunnel tested rear spoiler greatly reduces air drag Includes Pinlock(R) prepared HJ-34P shield Improved vision with up to 10mm increased side view Four shell sizes, including youth size Interchangeable cheek pads Removable, washable interior Universal clamp space makes for easy installation of any Bluetooth(R) device Pinlock(R) HJ-34P Lens Insert [https://helmethouse.com/pinlock/hj-34p-lens-insert.html#sku-0925-9300-00] (DKS463) Standards: DOT Approved The C10 is a 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.