The Mach1 LV PRO W TD is the benchmark for performance, fit and customization in the womens high-performance ski boot world. Grounded in the fundamentals of high-performance womens specific ski boot design, the LV PRO W features T-Drive technology which is a revolutionary carbon fiber shell to cuff connection that allows the boot to function in a much more efficient way, resulting in a smoother more consistent flex, better performance and less energy required to ski at a high level. When you add the Asymmetrical Power Transmission shell and cuff design to the equation you get a precise and powerful boot that is completely at home charging down any type of terrain or snow condition the mountain can throw at you.