The Lange RS 140 is a true elite level race ski boot for technical skiers that demand the highest performance with a more accessible fit for the serious-minded skiers who demand it. Utilizing Lange s new Control Fit Technology and a 97mm last, the Lange RS 140 Ski Boots provide the perfect combination of high performance power transmission and uncompromising comfort. The mono-injected shell makes customization easy and offers an efficient neutral and upright stance and the cork flow liner provides a precise fit and unprecedented performance.Materials:Mono-injected Polyether shell and cuff. Buckles – extruded Alu, 4 micro adjust.Liner: Molded thermo customizable liner with Polyethylene + EVA foam ankle pads provides elasticity and comfort. Race Fit with lacing system, FLO pads, and adjustable rear spoiler. Adjustable tongue. Instep lock – reinforcements have been stitched on the liners to increase foot and heel retention.Pre-Shaped Asymmetrical Toe Box for warmth and comfort. Additional Features: Flex adjustment 2 rear screws. Macro adjustment 2x3 positions screwed catches. Power strap 40 mm w/ Cam Lock.Cuff Shape: V-Cut Lateral Profile allows for a progressive flex of the upper cuff, guarantees perfect retention of the rear and medial portion of the foot, and makes step-in easier. Power Wrap Wedge – mid line reinforcement protects the shin, enhances the sensitivity and precision during cuff motion. Stance 4 degree ramp angle, 12 degree forward lean w/o spoiler, 16 degree forward lean w/ spoiler. Canting +/- 1.5°.Flex and Fit: 140 flex rating. 97mm last is for technical high level skiers who are looking for both performance and comfort. Anatomic and precise on the back and medial portion of the foot - good toe box volume. Control Fit Technology - The process of shell engineering is powered by the data generated throughout a foot scanning system and allows for a more accurate and precise fit. Innovative true lasted fit in the heel cup, toe box, navicular and instep areas for the most accurate fit.