The K2 Women's BFC W 90 Ski Boots are the ultimate in comfort-driven performance technology. These boots are made with a 90 flex rating, wide 103mm last, Cushfit liner, and heat-moldable shell giving them the ideal blend of comfort and responsiveness. They feature K2's Powerfuse Spyne, which is a rear co-injected Y shaped support that adds strength and power to the Energy Interlock™ in order to maximize fore and after flex efficiency and lateral stiffness for responsiveness in every type of terrain. Speaking of Energy Interlock™, these boots are equipped with its rivet-free technology that integrates the cuff and shell, putting less stress on the boot's material and produces a smoother, progressive flex. Throw in Apres Mode for easy walking to and from the slopes, and you've got the most comfortable full-featured boots on the mountain. Slide into the K2 Women's BFC W 90 Ski Boots and see what comfort and performance are all about.