Salomon Shift Pro 120 Alpine Touring Ski Boots 2023DESCRIPTION: Advanced expert level ski boots with a stiff flex. FEATURES: Ski Boots 4 Micro Adjustable Aluminum 3D Buckles My Custom Fit 4D Liner with Walk Function Core Frame Construction A thinner walled Sensitive Shell is reinforced by the Core Frame element that runs under the midfoot from maleolus to maleolus and stiffens the shell where you drive the ski with a minimum of added weight. Ability Level: Advanced Expert Flex: 120 A stiff flex