The Dalbello DS 110 is a great option for advanced intermediate to expert level skiers with a medium width forefoot and medium sized shaft of the leg. The DS is support my exterior spine called the Power Cage enhancing the boots power transmission to the ski and binding. Take your boots into a qualified ski shop and put My Fit technology to the test which allows the shell and liner to be full heat moldable, for a custom fit. Contour 4 Constructions strategically maps the anatomical contours of your feet for custom comfort pockets for enhanced feel, avoiding cramps in your feet. The Thermal Insulated Bootboard helps with further energy transmission while keeping the base of the boot liners warm. Drive and Control technology offers more room and the toe box while support the heel to avoid slippage while keeping blood circulating in your feet for all day comfort and warmth. Dalbello knows reliability and comfort when it comes to the DS 110. Best Fits a Medium Forefoot and Medium Shaft of the Leg, Power Cage, 3D Grip Texture, Contour 4, My Fit, Overlap Design, Drive and Control, Thermal Insulated Bootboard, Actual Flex: 110, Cuff Alignment: Dual, Warranty: One Year, Ski Boot Width: Medium (99-101mm), Flex: Stiff, Used: No, Ski/Walk: No, Forefoot Width: 100mm, Flex Adjustment: No, Buckle Count: 4, Category: Downhill, Ski Gear Intended Use: All Mountain, Instep Height: Medium, Calf Volume: Medium, Skill Range: Advanced Intermediate - Expert, Model Year: 2021, Product ID: 609364, Model Number: D2003008.00.265, GTIN: 0616438782274