Contrary to popular belief, your foot actually doesn't have to hurt with hot spots and numb coldness halfway through a day filled with skiing groomers. Salomon outfitted the Women's X Pro Custom Heat Ski Boot with its heat-moldable Custom Shell, heat-forming Custom Fit 3D liner, and electronic Heat 3D Pro technology, so you can ski in a boot that mirrors your foot's shape and adjusts its warmth according to the day's temperatures. With a fully charged battery, the X Pro's Heat 3D Pro technology assures adjustable warmth for up to eighteen hours. A Twinframe chassis grants the X Pro with enhanced control and sensitivity, so you can feel the corduroy underneath your skis while you bank turns with precision. The Oversized Pivot makes sure you get the most out of the boot's moderate 90 flex when you're skiing with wider skis.