The Women's Rossignol Alley BOA H4 Snowboard Boots deliver the support you need for progressive all-mountain riding. A BOA Fit System offers a snug, precision fit with the turn of a dial. The H4 dial 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. Thermo-moldable liners keep your feet warm and let you get a custom fit to match your foot shape. Hidden lace guides minimize wear, while a rubber outsole extends durability and provides confident grip on and off the board.BOA & BOA COILERBoa Fit System dials and laces are lifetime warrantied and allow an effortless and precise tightening of your boot with a quick release. The Coiler version automatically retracts lace slack, making closure and release even quicker.Articulated CuffThe upper part of the shell moves independently from the lower part. Reducing shell bending and providing a softer flex and smoother support. Featured on: Crank Boa/Laced and Alley Boa.J-BARSOur anatomically molded heel and ankle pocket eliminates heel lift and locks your foot into the back of the boot, enhancing comfort and support for optimized performance.