Set your own tracks in the BC X10 backcountry ski boot. The lightweight design blends touring mobility with downhill control in an insulated, thermo-moldable build. The pre-molded and hinged external cuff provide stability and control in untracked snow. A tall external gaiter and lace cover seal out snow for dry feet, while a Thinsulate lining helps keep feet warm. Dual Core Technology allows targeted boot stiffness for the most responsive feel without a weight penalty. A wide Rottefella Nordic BC sole delivers the stability and control for wider skis and varied snow conditions. 3M Thinsulate heat-retaining insulation delivers increased warmth in damp and cold conditions for all-day comfort and warmth. Thermoadjustable liners can be heat-molded around your feet for a customized fit and comfort.  Precise Boot Flex, Fit Stability, Control Extra Warmth Customizable Fit, Comfort Materials Closing System: Tongue + metallic hook Heel: External 3D plastic reinforcement Lace Cover: PVC, Cordur