The new Mach Sport 90 HV from Tecnica is a fantastic option for the intermediate to advanced skier who has a medium to wide forefoot and medium to wide shaft of the leg. Tecnica's PE Light Celliant Liner has anatomically correct padding that utilizes thermoreactive minerals that take your body heat and transfer it into infrared energy keeping you warmer on the mountain. The C.A.S. (Custom Adaptive Shape) Shell has dimples located in strategic areas that allow an easy road map for a bootfitter to press and shape the shell if you need some customization. These dimples also hold the shape of a punch and require less force to move the shell. A Dual Quick Instep has softer plastic across the top of the foot that allows your foot to slide in and out of with little effort. The Upper Cuff Buckle has a Ratcheted Buckle that gives you the ability to fine tune the fit in your leg and calf area for a comfortable and supported performance. If you want a warm and comfortable boot that best fits a medium to wide forefoot and leg shape the new Mach Sport 90 HV is a perfect choice. Best Fits a Medium to Wide Forefoot and Medium to Wide Leg Shape, C.A.S. Shell, PE Light Celliant Liner, Dura-Tec Construction, Dual Quick Instep, Lift Lock Buckles, Top Ratcheted Buckle, 35mm Power Strap, Actual Flex: 90, Cuff Alignment: Dual, Warranty: One Year, Ski Boot Width: Medium Wide (102-103mm), Flex: Stiff, Used: No, Ski/Walk: No, Forefoot Width: 103mm, Flex Adjustment: No, Buckle Count: 4, Category: Downhill, Ski Gear Intended Use: All Mountain, Instep Height: High, Calf Volume: Medium, Skill Range: Intermediate - Advanced, Model Year: 2019, Product ID: 523231, Model Number: 10187100 255, GTIN: 0888341581224