If you are a powerful skier looking for a responsive boot that is easy to customize, the Tecnica Cochise 120 DYN is an excellent option for you. Tecnica's Mobility Cuff offers a 42 degree range of motion in hike mode for easy and efficient skinning or hiking for some deep turns. The C.A.S. Shell uses dimples to provide a bootfitter with an accurate map on areas to punch. The C.A.S. (Custom Adaptive Shape) UltraFit Pro Liner has customizable material in the heel and ankle pocket that delivers a precise heel lock and a high amount of power transmission. These dimples hold a punch much better, while requiring less pressure to shape the shell. Lift Lock Buckles stay open when you want them to and stay clamped when you need them to. A 45mm Power Strap keeps a snug wrap across your shin, while delivering a strong amount of rebound. The Tecnica Cochise 120 DYN is a ripping boot for aggressive skiers who have a medium to narrow forefoot and medium to narrow leg shape. C.A.S. - Custom Adaptive Shape Shell, C.A.S. Ultra Fit Pro Liner, Mobility Cuff, Lift Lock Buckles, 45mm Power Strap, Best Fits a Medium to Narrow Width Forefoot and Narrow Leg Shape, Actual Flex: 120, Cuff Alignment: None, Warranty: One Year, Flex: Stiff, Ski/Walk: Yes, Forefoot Width: 99mm, Buckle Count: 4, Category: Alpine Touring, Ski Gear Intended Use: All Mountain, Instep Height: High, Calf Volume: Standard, Skill Range: Advanced Intermediate - Expert, Model Year: 2020, Product ID: 573276, Model Number: 10191400 265, GTIN: 0888341671253