The Mach1 HV 130 is the go-to boot for high-level, all-mountain chargers. Grounded in the fundamentals of classic ski boot design, the HV 130 features T-Drive technology, which allows the boot to function in a much more efficient way, resulting in a smoother, more consistent flex. Developed with a high-volume anatomically shaped shell and liner, the C.A.S. technology provides a great fit right out of the box but allows the boots to be fully customized if need be.