The Atomic Hawx Ultra 100 is a great option for advanced intermediate to expert level skiers with a narrow forefoot and standard calf volume. Memory Fit allows you to heat mold the shell, cuff and liner for maximum comfort and custom fit your foot. The added Energy Backbone supports the shell and the cuff by providing a lightweight spine for enhanced power transmission into your bindings and skis. Prolite construction keeps the boot lightweight while enforcing the key areas for maximum performance and functionality. Enhance your skills on the slopes with the Atomic Hawx Ultra 100. Best Fits a Narrow Forefoot and Standard Calf Volume, Prolite- Reinforcements in key zones for added strength and stiffness., Energy Backbone- A rear spine for added strength and power transmission., Memory Fit- Allows for the shell, cuff and liner to be heat molded., 3D Silver Liner- Plush liner that delivers a great fit and maximum warmth., Actual Flex: 100, Cuff Alignment: Dual, Warranty: One Year, Ski Boot Width: Narrow (95-98mm), Flex: Medium, Used: No, Ski/Walk: No, Forefoot Width: 98mm, Flex Adjustment: No, Buckle Count: 4, Category: Downhill, Ski Gear Intended Use: All Mountain, Instep Height: Standard, Calf Volume: Standard, Skill Range: Advanced Intermediate - Expert, Model Year: 2022, Product ID: 913371, Model Number: AE502466026X, GTIN: 0887445279259