The K2 Recon 120 MV Heat is a perfect solution for aggressive skiers who are ready to have warm feet all day who have a medium to narrow forefoot and medium to narrow leg shape. An integrated Therm-ic heating system in liner is rechargeable via an included USB port. The heating system has three settings that can last up to 19 hours. The shell is made from a Heat Moldable TPU material that allows a bootfitter to customize with heat, punching or grindings for a perfectly dialed in fit. K2's Energy Interlock delivers a smooth a progressive flex, by not using a rivet to attach the upper cuff to the lower shell. The Powerfuse Spine increase forward flex power with a high amount of rebound that delivers total control when you are really ripping down the mountain. K2's Powerlite Shell is lighter than ever before, with an increased shell thickness in certain areas that maintains a strong energy transfer for added responsiveness out of your skis. If you want a boot that is packed with performance that keeps your feet warm all day, the K2 Recon 120 MV Heat is the perfect solution. Best Fits a Medium to Narrow Forefoot and Medium to Narrow Shaft of the Leg, Integrated Therm-ic Heating System, PrecisionFit Pro Liner, Powerlite Shell, TPU Heat Moldable, FastFit Entry, Energy Interlock, Actual Flex: 120, Cuff Alignment: Dual, Warranty: One Year, Ski Boot Width: Medium (99-101mm), Flex: Very 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: Standard, Calf Volume: Standard, Skill Range: Advanced - Expert, Model Year: 2020, Product ID: 519099, Shipping Restriction: This item is not available for shipment outside of the United States., Model Number: S181900301265, GTIN: 0886745769125