The Mach1 MV 120 is a high performance ski boot designed for advanced to expert level skiers with medium volume feet who are looking for a comfortable but precise fit and a high level of customization. Grounded in the fundamentals of ski boot design, the MV 120 features T-Drive technology that allows the boot to function in a much more efficient way. Developed with an anatomically shaped shell and liner, the C.A.S. technology provides a great fit right out of the box but allows the boots to be fully customized if need be. Customization Liner: C.A.S. Customization Shell: C.A.S. Customization Tongue: C.A.S. Soles: ISO 23223 GripWalk Shell: Polyurethane - Quick Instep Cuff: Polyurethane Customization Liner: Ecodesign - Performance - C.A.S.- Celliant®- Floating Tongue Buckles: 4 Micro Adjustable Aluminum with Lift Lock Powerstrap: 45 mm Strap Forward Lean: 13.3° T-Drive Carbon Connector Weight (half pair): 1950 g