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. The main upper material is constructed using microfiber for optimum abrasion resistance, while also delivering high levels of flexibility. It also features a new front flex area for improved impact abrasion while also ensuring natural front and back movement. The redesigned top gaiter is made of microfiber material with TPU over injection for enhanced prehensility.