DUAL BOA FIT SYSTEM – Independent H4 Coiler tongue reel and H4 Remote reel provide precise upper and lower zone adjustment for customized fit control EXTREME COLD INSULATION – HydrX Pro membrane with 700g insulation rated to -50°C keeps feet protected in severe winter conditions ARTICULATED UPPER CUFF – Minimizes shell distortion at the ankle when flexing to maintain natural mobility during aggressive riding IMPACT ABSORPTION MIDSOLE – 20mm thick EVA midsole with molded inner heel flex insert provides maximum impact absorption and backward flex control AGGRESSIVE TREAD OUTSOLE – FXR Aggressive tread with concave footprint delivers enhanced traction and stability on snow and ice The FXR Men's Elevation Dual BOA Winter Snow Boot is built for aggressive mountain riding, racing, and technical backcountry terrain. The dual-zone BOA tensioning system with independent H4 Coiler tongue reel and H4 Remote reel delivers precise fit control across upper and lower zones for maximum support and performance in extreme conditions. The HydrX Pro waterproof membrane and 700g insulation provide protection rated to -50°C. An articulated upper cuff minimizes shell distortion at the ankle during flexing while maintaining natural mobility. The 20mm thick EVA midsole absorbs impact from harsh landings and rough trails, while a molded inner heel flex insert controls backward flex and adds impact support. The fixed liner features micro fur lining and Achilles cushioning for comfort during extended sessions. Minimal seams in sled-contact areas and an ultra-low profile toe box reduce interference with machine controls. The FXR Aggressive tread pattern uses a concave footprint design for enhanced traction, stability, and floatation on steep slopes and deep snow with integrated toe and heel kick zones. A half-zip gaiter with front and rear pant cuff attachment system seals out snow. Stiff upper reinforcements and contoured grab handles support single-handed carrying between runs. Key Features: BOA dual zone tensioning with H4 Coiler tongue reel and H4 Remote reel HydrX Pro membrane with 700g insulation rated to -50°C 20mm EVA midsole with molded inner heel flex insert for impact absorption Articulated upper cuff design minimizes shell distortion during ankle flexing Aggressive tread with concave footprint for traction and stability in deep snow Half-zip gaiter with front and rear pant attachment system Fixed liner with micro fur lining and Achilles cushioning Minimal seams in sled-contact areas with ultra-low profile toe box