The Tecnica Mach1 120 LV Ski Boot is focused on precision - giving you a ski boot that helps you ski your best without skimping on comfort. Designed around a 98mm last, these boots can accommodate narrow feet and low arches to avoid swimming around in your boot. It uses C.A.S. Technology in the shell and liner, which adds some comfort to your boots, with 4 Micro ALU Lift Lock buckles that make it easy to dial in the fit for a stable feel. And of course, precision performance is key as well. This is why the Overinjected Backspine delivers Asymmetric Power Transmission, which helps your inside and outside edges receive more balanced performance, making every turn crisper, cleaner, and hopefully faster.