The Lange Women's RX 110 LV Ski Boot was designed to give you the powerful connection you need to point your skis down tight chutes, arc down wide open groomers, and blast through pow like a proper mountain gal should. With a stiff 110 flex, the RX 110 is the stiffest offering in Lange's women specific all mountain RX line, and with a narrow 97mm last, it's the perfect option for skiers seeking a precise and performance forward fit from their boots.The RX is made through Lange's mono injected process, which consists of a smooth and progressive polyether shell that will inspire confidence on both frontside groomers and back mountain bowls. Four stout aluminum buckles and a 40mm power strap put the boots on lock down when it's time to lay the hammer down on the descent. To keep the boot warm and comfortable all day, Lange went ahead and threw in a heavy dose of Thinsulate insulation to deliver low bulk warmth with additional insulation at the toe box and ankle. The liners are heat moldable, allowing them to be customized to the shape of your foot. Since skiing the entire mountain will require some hiking up steep bootpacks and sketchy ridge lines, the RXs are fitted with vulcanized rubber soles to keep you secure on your feet when the hike turns dicey.