The Salomon S/Pro 120 is an awesome option for advanced to expert level skiers with a medium width forefoot and high volume calf. The Custom Shell HD Shell and Cuff constructs the boot with thinner material making the S/Pro lightweight and more efficient transferring energy into the boot. Put the Customization to the test and bring your boot into a qualified ski shop to get it heat molded to your foot. Coreframe 360 ensures the boot doesn't lose any of its stiffness and helps deliver proper power transmission into the ski from your S/Pro. Sensifit Insert is the process of using soft PU on the external part of the shell to make it easier to step into the boot and is considered a boot fitters best friend. The seamless My Custom Fit 3D Pro Liner delivers tons of comfort and warmth for longer sessions on the slopes and can be heat molded after taking it to your local ski shop. Fly down the mountain with precision and style with the Salomon S/Pro 120. Best Fits a Medium Width Forefoot and High Volume Calf, Coreframe 360, Custom Shell HD Shell and Cuff, Sense Amplifier, Sensifit Insert, My Custom Fit 3D Seamless Pro Liner, Sense 45mm Strap, 4 Riveted Aluminum Buckles, 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: 100-106mm (Custom Shell HD), Flex Adjustment: Yes, Buckle Count: 4, Category: Downhill, Ski Gear Intended Use: All Mountain, Instep Height: Medium, Calf Volume: High, Skill Range: Advanced - Pro, Model Year: 2021, Product ID: 613081, Model Number: L41166400255, GTIN: 0193128302702