Arai Classic-v Metallic HelmetOne piece, multi density EPS line Optimized from decades of research and development for maximum protection throughout the entire liner. Designed in concert with Arais proprietary outer shell, the multi density EPS beads are molded into a single liner, maximizing energy absorption requirements as needed in each area of the helmet. This tuning maximizes impact energy absorption ability while maintaining a uniform and compact helmet. Focus on protection