K2 Recon 100 MV Ski Boots - Men's Unmatched performance in this lightweight yet extremely comfortable alpine boot. Features: Flex - 100 Last - 100mm Liner - LuxFit Pro Strap - 40mm Velcro Technology: PowerLite Shell TPU Heat Moldable FasFit Entry Powerfuse Spyne - A rear co-injected "Y" shaped support that adds strength and power to the Energy Interlock in order to maximize fore/aft flex efficiency and lateral stiffness for responsiveness in every type of terrain. Energy Interlock - A rivet-free technology that integrates the cuff and shell, putting less stress on the boot's material and produces a smoother, progressive fl ex. Cantable Outsoles GripWalk Outsoles - New removable and interchangeable ISO 9523 alpine rockered soles collaboratively designed to work with Marker's Grip Walk binding system for better grip and added comfort when walking and standing in boots, but doesn't compromise the power transmission and release function between the boot and binding when skiing.