Rossignol's Crank Boa H4 snowboard boots deliver the support you need for progressive all-mountain riding. Boa's Fit System offers a snug, precision fit with the turn of a dial. The H4 Coiler auto retracts for quick, on-the-fly adjustments. A stiff Articulated cuff complements the smooth boot flex for the support to push and build your skills. The new True Form Thermo-moldable liner will not only reduce play, add precision and cut down fatigue but also keep your feet warm and let you get a custom fit to match your foot shape. Hidden lace guides minimize wear, a rubber outsole extends durability and provides confident grip on and off the board, while the EVA midsole will increase shock absorption and improve comfort.