Indulge your feet - and your skiing - in the K2 Mindbender 110 BOA Alpine Touring Ski Boots. These hybrid boots are equipped with the latest BOA technology, providing a customized fit that&';s capable on the skin track but won&';t let you down on the descent. Their Luxfit Pro Tour Liners are fully heat moldable, and a Powerlock Spyne mechanism provides a huge range of motion for comfortable walking. For skiers ready to explore beyond the confines of the resort, the Mindbender 110 BOA strike the perfect balance. Fit Multi-Last: 97mm to 100mm - Heat moldable to fit a variety of forefoot widths FastFIT Instep - Softer TPU material is used in the instep area of select models&'; shells for quick and easy entry and exit. Flex Flex: 110 - A moderately stiff flex for advanced to expert skiers Liner Luxfit Pro Tour Liner - Pre-molded and lasted with Ultralon heat-moldable foam. Features a medium-density foam, pre-molded ankle pockets, and a medium-density collar. Includes a tour notch at the back of the ankle for increased comfort and range of motion while hiking and skinning. Shell Materials Shell - Thermoplastic Urethane (TPU) Cuff - Thermoplastic Urethane (TPU) Powerlite Shell - K2&';s highest performance shell design, utilizing shell walls of varying thickness and four different types of TPU to provide the ultimate combination of light weight and responsiveness. Fully Heat-Moldable - Both the boot&';s shell and cuff are capable of being heat molded to a variety of foot shapes for a truly custom fit. Ski/Walk Mode Powerlock Spyne - A performance-oriented walk mode designed for ski touring that offers a 50-degree range of motion. When in ski mode, Powerlock Spyne provides a powerful and secure connection for uncompromised downhill performance. Friction Free Cuff Pivot - An easy hinging cuff pivot designed to provide minimal resistance while in walk mode. 50 Range of Motion Buckles 2 Light Alloy Top Buckles BOAA(R) Fit System - The BOAA(R) Fit System provides a performance fit engineered to enhance feel and responsiveness while reducing pressure points by incrementally modulating the Alpine boot closure with precise micro-adjustments. Power Strap Non-Elastic Cam Strap Bootboard & Footbed Modular Honeycomb Bootboard - The honeycomb boot board includes two modular heel inserts. A soft Harsh Mellow insert for a high level of damping or a more rigid insert for improved power transfer. Sole GripWalk ISO 23223 Outsoles - Removable and interchangeable rockered soles designed to work with GripWalk binding systems for better grip and comfort while walking, standing, and hiking. Integrated Tech Fittings