The K2 Women's B.F.C. 90 All-Mountain Ski Boots are completely comfort driven with K2's legendary CushFit Liner. A rear co-injected "Y" shaped support that adds strength and power to the Energy Interlock in order to maximize fore/aft flex efficiency and lateral stiffness for responsiveness in every type of terrain. Also featuring a roomy 103mm last, available GripWalk Soles, and a handy Apres Mode that releases the cuff for an easier walking experience from the car to the lifts. Time to shred.