Bell RS7-K Kart HelmetSnell K 2020 Carbon Fiberglass Composite Shell Optical grade injected Double Screen Anti Fog (DSAF) 3MM visor for anti fog control and superior visibility Powerful and effective top and chin bar ventilation system with 14 air intake and extraction channels for maximum ventilation Air intake system and rear spoiler available separately Shell and shield design optimized to improve aerodynamic performance, reduce internal noise and enhance energy