KEY FEATURES T Drive Fiberglass Insert running up the rear spine provides an efficient path for your power to flow down to the snow Asymmetric Polyester and Polyolefin Construction gives you thicker walls on the inside edge of the boot improving support and comfort C A S Construction gives you and your bootfitter unequaled potential for customization of fit ensuring you get the performance you want in a boot Support doesn?t have to cost you comfort you can get the Tecnica Mach1 120 LV Ski Boot It?s built using Technica?s C A S Construction creating the dimpled texture in the shell of the boot that both allows it to more easily wrap around your foot but also allows a skilled bootfitter to custom shape the shell for a fit that?s uniquely yours Then all you have to do is buckle in using the micro adjust locking buckles and throw on the 45mm power strap Once in place you?ll get the most efficient control of your skis thanks to a T Drive spine as well as Asymmetric construction that gives your power more space to work it?s way down to the snow SPECSLast Width 98Skill Level ExpertFlex Stiff