The LS2 Subverter full face motocross helmet is a game changer in the world of high-performance MX helmets. LS2 uses their proprietary Kinetic Polymer Alloy (KPA) for the shell. It’s lightweight, offers just a little flex as part of the energy management system, and is ultra-strong. It tests as well as the best composite materials in the world and is the perfect material for a racing helmet. This proprietary material uses nanotechnology to blend microscopic particles of aramid fibers into a high-end polymer. LS2 uses 3 shell sizes for the Subverter to assure that you get the smallest, lightest shell possible for your specific size. In fact, this is one of the smallest shells in the business. Perhaps the safest MX helmet on the market. Crumple zone channels in EPS for additional energy management. Emergency release cheek pads. Double D ring strap for secure fit. Massive multi-port ventilation. Air channels in the EPS allow ultimate airflow while doing dual duty as an additional crumple zone for added safety.Class leading energy management.AREM (advanced rotational energy management) technology.Kinetic Polymer Alloy (KPA) Shell with built-in energy managing flexibility.Wide eyeport accommodates most modern goggles.Crumple zone channels in EPS for additional energy management.Emergency release cheek pads.Highest quality, removable, washable, technical fabric liner wicks moisture to keep you cool.3D Laser-cut cheek pads for all day comfort with no hot spots.Meets or exceeds DOT FMVSS 218 and ECE 22.05 certification.