The Tecnica Mach 1 HV is a high-performance boot designed for those skiers with a higher-volume foot. With a stiff flex of 130 and 103mm last, this boot is for those aggressive rippers who have a wider foot and want a comfortable fit. The High Performance C.A.S. Liner with C.A.S. tongue heat molds precisely to your anatomy, making the Mach1 HV 130 one of the most comfortable boots out there for bigger dudes. If you’re looking for precision, power, and response, this boot is for you.