The Salomon X-Pro R100 is a popular option for the strong intermediate to expert skier looking for performance and easy customization. The My Custom Fit Liner has thermoformable material in the heel and ankle pocket that can be heated to accelerate the breaking in process. Salomon's 24mm Oversized Pivot adds a burly connection between the upper cuff and lower shell that adds more power and energy transfer to your skis. The 360-Degree Custom Shell is fully customizable by an Authorized Salomon Dealer, who will heat the shell in a special oven. Once the shell is hot enough, the bootfitter will place the boots on your feet. When the shell starts to cool down it will mold to the shape of your foot for added comfort and performance. The TwinFrame 2 Technology adds reinforcements to the back spine and sole of the shell that adds more power, rebound and reduces torsional twisting for added responsiveness. Best Fits Most Foot Shapes After Molding Process, and a Medium Calf Volume, 360-Degree Custom Shell, TwinFrame2, 24mm Oversized Pivot, My Custom Fit Liner, Flex Adjuster, 35mm Strap, Actual Flex: 100, Cuff Alignment: None, Warranty: One Year, Ski Boot Width: Medium (99-101mm), Flex: Stiff, Forefoot Width: 100mm+ Custom Shell, Flex Adjustment: Yes, Buckle Count: 4, Category: Downhill, Ski Gear Intended Use: All Mountain, Instep Height: Medium, Calf Volume: Medium, Skill Range: Intermediate - Advanced, Model Year: 2019, Product ID: 570053, Model Number: L40574400265, GTIN: 0889645660066