Almost every component of the Supertech R Boot, Alpinestars definitive racing boot as worn by a roster of champions past and present, has undergone a rigorous program of upgrades to sharpen its performance features even further. Featuring innovations derived using feedback from Alpinestars involvement in top flight racing, key elements include a newly redesigned front flex area, a redesigned rear bellow, a redesigned top gaitor, a new shifter and shin plate, a new shin slider and a new inner bootie, all of which enhance the comfort, protection and the performance of this boot to a new class-leading high. * Main upper material constructed using microfiber for optimum abrasion resistance, while also delivering high levels of flexibility. * New front flex area for improved impact abrasion while also ensuring the natural front and back. * Redesigned top gaiter in microfiber material with TPU over injection for enhanced prehensility.