The Dalbello Lupo AX HD is a great option for advanced to expert level skiers with a medium forefoot and standard calf volume. Fit technology along with the lightweight foam liner brings maximum comfort and warmth for the coldest backcountry excursions and will have your feet saying thank you after a long day. Tech inserts are added for those skiers who like to go as lightweight as possible into the backcountry. GripWalk Soles bring peace of mind knowing that every step you take is a confident one no matter the surface you're walking on. Ascend to your destination by switching on the hike mode and removing the tongue for a full 67 degrees of motion for natural strides uphill. Attach the tongue and lock the heel to the cuff and enjoy lightweight performance with added precision and power transmission when it's time to descend. Explore the great unknown with the Dalbello Lupo AX HD. Best Fits a Medium Forefoot and Standard Calf Volume, Cabrio Design- Three piece design for smoother and easier flexing., Contour 4- Maps the anatomical contours of the foot for a precise and comfortable fit., ID Max Light Liner- Fully heat moldable EVA foam for comfort and warmth., Quick Removable Tongue- Delivers maximum forward lean movement., Kinetic Response Tongue- Strong flex with smooth elastic rebound., Tech Inserts- Compatible with PIN touring bindings., Dynalink Heel Retention System- Independent instep closure for little foot sliding and better flexing., Hike and Ride Mechanism- Releases the cuff from the shell for a wide range of motion., Low Cuff Hinge Point- Heightened power and control with less effort., GripWalk Soles- Better traction on uncertain surfaces., This Boot is Only Compatible with Bindings Stamped GripWalk (GW) or Multi Norm Certified (MNC), Skill Range: Advanced - Pro, Model Year: 2022, Product ID: 905719, Model Number: D2107002.00.265, GTIN: 0616438794017, Calf Volume: Standard, Instep Height: Standard, Ski Gear Intended Use: Side Country/ Backcountry, Category: Alpine Touring, Buckle Count: 3, Flex Adjustment: No, Forefoot Width: 100mm, Ski/Walk: Yes, Used: No, Flex: Stiff, Ski Boot Width: Medium (99-101mm), Warranty: One Year, Cuff Alignment: None, Actual Flex: 120