Power and Precision. The RS 120 Short Cuff designed for junior racers and women, is the result of Lange's deep understanding foot mechanics, fit, and ski boot behavior. The new, race-developed Dual Core construction supplies incredible energy and flex control for total control through the turn. The anatomic shell design integrates perfectly with Lange's new thermo-formable Dual 3D liner, delivering unparalleled comfort, precision, and power transmission. "Be One with your boots, Be One with your goal".