The master of light, this streamlined, elegant ski mountaineering boot is one of the lightest in existence. Built for hard-core ski mountaineers who choose to go ultralight, whether touring or racing. The Masterlite is solid-skiing and easy to use. Its unique Pebax Webframe shell is reduced to its critical elements for a solid structure with ultra-light weight. The Masterlite"s hardware is simple, effective, and fast. Its sole has just the right amount of spring to keep your energy moving ahead. Optional Power Strap and Spoiler are included in the box. Shell: Pebax, Flex Index: 110 AT, Liner: Lite thermo, Closure: Double Action Cuff buckle, instep buckle and optional power strap, Forward Lean: 24 degrees + walk, System: Tech.