Shoei X-15 Marquez 7 Helmet Shoei developed the X-15 with technologies born from racing with one mission in mind, to make the fastest riders on the planet even faster. By designing and refining the X-15 helmet in their state-of-the-art wind tunnel facility, Shoei was able to reduce drag by 6.1% and lift by 1.6% compared to it's predecessor the X-14. The X-15 features a Multi-Ply Advanced Integrated Matrix Plus (AIM+) Shell, a six-ply matrix of fiberglass with lightweight organic and high-performance fibers to provide optimal impact-absorption, strength and elasticity. Packed in the X-15's shell is a multitude of features fit for a pro and ready to boost your performance, safety and comfort. Aerodynamic Shell Design ---Designed and refined in Shoei’s state-of-the-art wind tunnel facility ---6.1% reduction in drag and a 1.