The all-new RX SUPERLEGGERA is the result of pure performance-driven innovation. Langes revolutionary Dual Core technology meets an ultra-light Grilamid® shell construction to deliver a new premium blend of precision, agility, and power. - Built on the award-winning RX chassis, this limited-edition version features ultra-light shell and liner engineering for an almost 25% reduction in weight, supplying elevated all-mountain performance for only the most committed skiers. Specifications:- Weight: 1772 g / boot- Shell material: GRILAMID DUAL CORE LIGHT- Cuff material: POLYOLEFIN DUAL CORE LIGHT- Liner technology: DUAL 3D LINER PRO- Liner power strap: 40- BUCKLES: technology: ALU LIGHT, SECURE PROFIL, SCREWED- Soles specifications: BI-MATERIAL PADS, GRIP WALK COMPATIBLETechnology:DUAL CORE:- Our new DUAL CORE construction targets softer and more rigid durometers of ultra-lightweight Grilamid® plastic to key areas of the boot to enhance performance and entry-and-exit, resulting in a sandwich shell construction that increases energy, rebound, and flex control. DUAL 3D LINER PRO:- DUAL 3D LINERS are pre-shaped to match the inner shell for the most precise and accurate power transmission, and around the foot for our most comfortable anatomic fit. The DUAL 3D PRO version is 100% thermo-formable with two high-density foams integrated in key fit zones for increased comfort and support. - LIGHT LINER CONSTRUCTION: Our LIGHT LINER CONSTRUCTION features the integration of the lower density foams generally found in touring boots to reduce the overall weight of the liner. - CARBON EFFECT BUCKLES: CARBON EFFECT BUCKLES feature rich carbon-enhanced detail for cosmetic effect.