If you have a Medium forefoot and are looking for a powerful ski boot that adds responsiveness to your skiing, the Lange RX 130 is the perfect choice. The Dual 3D Liner has an anatomical shape that is easily thermoformable in the heel and ankle pockets for a dialed in fit. A Natural Stance is more upright to improve efficiency in your skiing and less fatigue since you are ripping on modern skis with rocker and sidecut. Lange's Dual Core Construction uses two different durometers of plastic placed in strategic areas of the shell to deliver a higher amount of energy transfer and responsiveness with every turn while enhancing rebound. The 50mm Power Strap keeps a snug wrap across your shin and adds even more rebound to this powerhouse of a boot. The Lange RX 130 is a high powered boot for the most aggressive skiers who have a medium forefoot and narrow to medium shaft of the leg. Best Fits a Medium Forefoot and Medium Shaft of the Leg, Dual Core, Max Grip Alpine Soles, GripWalk Compatible, Dual 3D Full Liner, Natural Stance, Rear Spoiler Adjustment, 4 Degree Ramp Angle/12 Degree Forward Lean, 45mm Power Strap, Actual Flex: 130, Cuff Alignment: Dual, Warranty: One Year, Ski Boot Width: Medium (99-101mm), Flex: Stiff, Ski/Walk: No, Forefoot Width: 100mm, Buckle Count: 4, Category: Downhill, Ski Gear Intended Use: All Mountain, Instep Height: Medium, Calf Volume: Standard, Skill Range: Advanced - Pro, Model Year: 2020, Product ID: 572800, Shipping Restriction: This item is not available for shipment outside of the United States., Model Number: LBI2030 265, GTIN: 3607682875406