The Lange RS 90 SC is a perfect race boot for younger, shorter racers, with a narrow forefoot and narrow shaft of the leg. The Short Cuff does not rise all the way up the leg to allow for a greater range of motion and more control over skis. The RS Shell now has a thicker shell that transfers energy towards skis faster and stronger. The RS Shell also boasts a stronger heel hold, slightly wider toe box and more defined ankle pockets for a more comfortable and performance oriented fit. The new Dual 3D Performance Liner has an anatomic construction with thermoformable material that can be heat molded for a customized fit. Best Fit a Narrow Forefoot and Narrow Shaft of the Leg, Short Cuff, Dual 3D Performance Liner, Dual Core, Natural Stance, 30mm Power Strap, 4 Degree Ramp Angle/12 Degree Forward Lean, Actual Flex: 90, Cuff Alignment: Dual, Warranty: One Year, Ski Boot Width: Narrow (95-98mm), Flex: Stiff, Ski/Walk: No, Forefoot Width: 97mm, Flex Adjustment: Yes, Buckle Count: 4, Category: Race, Ski Gear Intended Use: Race, Instep Height: Standard, Calf Volume: Standard, Skill Range: Advanced Intermediate - Expert, Model Year: 2022, Product ID: 572852, Shipping Restriction: This item is not available for shipment outside of the United States., Model Number: LBI5010.255, GTIN: 3607682878445