Mach1 stands for pure performance and precise fit with ultimate customization capabilities. For high-performance skiers who want a wider and more spacious ski boot without losing power and performance. Built on a 103mm high volume last and supported by the C.A.S. adjustment system, HV 130 delivers tons of power, comfort and control never seen before in a high-volume boot. HV 130 lives up to the Mach1 name.