The Rossignol Men's Alltrack 110 All Mountain Hike Ski Boots are perfect for advanced intermediate to expert skiers looking for all mountain conditions. The medium width of these boots make them ideal for a medium forefoot with medium calf volume and features Thermo Optisensor 3D T3 liners with dual density 3d molded padding in key fit zones for comfort, warmth and support. Additional amazing features include the Sensor Grid which enhances the shell while reinforcing its torsional & flexural rigidity along with the new Optimized Hike Mode which includes a wider opening in the back of the lower shell, & a lower axis-of-rotation for optimized range of motion and uphill mobility. The Thinsulate® Insulation provides the best thermal insulation that is currently available on the market. Wrap your feet this season in the Rossignol Men's Alltrack 110 All Mountain Hike Ski Boots for comfort, support and warmth on your wild ski adventures.