Langes new RX 100 combines the racing pedigree of RS with enhanced all-mountain features in an exact, comfortable 100mm fit, delivering the ultimate in all-mountain precision, comfort, and performance to advanced skiers. Featuring all of Langes key fit and performance solutions: Control Fit, mono-injection shells and modern, efficient stance angles, the new RX includes Langes new Custom Tongue technology for maximum customization where circulation is often cut-off for even greater comfort, warmth, and control. RX simply fits more feet better, delivering enhanced comfort, precision and power to the most committed all-mountain skiers.Specifications:- Weight: 2188 g/boot- Material: shell POLYURETHANE- Bootboard: HARD POLYUTHERANE FOAM- Material - cuff POLYURETHANE- Liner - technology THERMO FIT, RL1- Liner - tongue POWER WRAP TONGUE + - Technology EXTRUDED ALU ERGO RACE- BUCKLES: - Adjustment 2 x 6 TEETH x 3 POSITIONS- Soles POLYURETHANE, ALPINETechnology:- 100mm Last: An exact, comfortable 100mm last designed for skiers with medium volume feet or skiers seeking slightly less foot compression for increased all-day comfort.- MONO INJECTED SHELL: Based on the injection of a single plastic material, mono-injection offers a smoother, more consistent flex, optimizes weight, and facilitates boot-fitting.- THERMO FIT LINERS: RL1, RL2 and RL3 liners are thermomoldable and offer an increasing foot Retention Level from 1 to 3 to meet the right balance of performance and comfort for every skier.- CUSTOM TONGUE: Tongue padding features a hollow instep area to guarantee maximum customization to the skiers instep. More comfort, more warmth, more ski control.- ERGONOMIC BUCKLES: The streamlined, asymmetrical buckle design guarantees maximum shell wrapping and easier lever handling.