The Tecnica Mach 1 120 HV is a perfect boot for the advanced to expert skier who has a medium to wide shaft of the leg. The Mach 1 120 has Tecnica's CAS (Custom Adaptive Shape) Liner that can easily be customized for your foot by heating. The CAS Shell is always a favorite for a bootfitter to customize. Strategically placed dimples in key fit areas hold a punch with less pressure or force and they provide an accurate road map for bootfitters to work with. Asymmetric Power Transmission, has a thicker shell on the inside of the forefoot that helps you drive your energy towards your skis more efficiently than ever before. LiftLock Buckles stay open when you want them to, so this boot can slip on and off your foot with ease. The 45mm Powerstrap keeps a snug wrap across your shin and increases rebound with every turn. If you want power and precision out of your skiing, with a boot that has a very accommodating fit the Tecnica Mach 1 120 HV is the boot for you. Best Fits a Medium to Wide Forefoot and Medium to Wide Shaft of the Leg, CAS Shell, CAS Liner, Asymmetric Power Transmission, LiftLock Buckles, 45mm Powerstrap, Actual Flex: 120, Cuff Alignment: Dual, Warranty: One Year, Ski Boot Width: Medium Wide (102-103mm), Flex: Very 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: High, Skill Range: Advanced Intermediate - Expert, Model Year: 2022, Product ID: 608910, Model Number: 10195100 245, GTIN: 0888341770161