Explore the winter landscape in the BC X5 backcountry ski boot. Designed for use on mid-width touring skis, the boot offers a versatile blend of lightweight touring mobility and off-trail performance. An insulated lining and thermo-moldable liner keep feet warm and comfortable, while the hinged external cuff offers stability and control for exploring off-trail. Features: Stability, ControlA wide Rottefella Nordic BC sole delivers the stability and control for wider skis and varied snow conditions.Freedom and ControlOur Mobile Cuff optimizes fore/aft freedom and torsional rigidity for total control.Extra Warmth3M Thinsulate(TM) heat-retaining insulation delivers increased warmth in damp and cold conditions for all-day comfort and warmthCustomizable Fit, ComfortThermo adjustable liners can be heat-molded around your feet for a customized fit and comfort. Technology: NBC Sole Designed for backcountry Nordic boots, the NBC SOLE is manufactured by Rottefella with a wider sole and rotation axle, delivering superior stability for every snow condition. Adjustable Strap ADJUSTABLE STRAP offers increased support and control. Dual Density Strap New lightweight dual-density EVA foam provides better boot-binding interface for increased comfort and energy transfer. Wrapped with a 3D molded spine for a comfortable, custom fit. Mobile Cuff MOBILE CUFF offers optimizes fore/aft freedom of movement with torsional rigidity for total control. Speed Lace Lock SPEED LACE LOCK system offers rapid, easy closure for increased support and precision. Thermo Adjustable Fit THERMO ADJUSTABLE liners can be heat-molded around your feet, providing an adaptable, customized fit for increased comfort and precision Details SKU: RIM3830000 Nordic Closing System Velcro strap + metallic hook Nordic Construction Heel External 3D plastic reinforcement Nordic Construction Lace Cover PVC/Cordura Nordic Construction Upper Cuff 3D injection High Cuff free support Nordic Lacing System Laces Nordic Lining Polyester Thermo Adjustable Fit THINSULATE Nordic Size Conversion 39 - 48 Nordic Sole Nnn BC