La Sportiva- Karakorum

Karakorum Mountaineering Boot
Designed for the intense level of NOLS and Outward Bound mountaineering courses, the La Sportiva Men's Karakorum Mountaineering Boot delivers superior support and rugged durability for long climbs and alpine expeditions. La Sportiva's Idro-Perwanger silicone-impregnated roughout leather is highly water-resistant, breathable, and tougher than a lumberjack's calloused hands. Add a Vibram rubber toe rand and outsole, as well as the wicking comfort of the Karakorum's Dry-Best lining, and this La Sportiva boot is ready to tackle trips to the planet's highest reaches.
 
3D Flex ankle hinge system articulates for lateral flex and greater agility; also reduces break-in period
Polyurethane SBR Aircushion midsole absorbs shock and cushions long approaches and descents
8mm high density nylon insole with anti-torsion plate delivers underfoot support for negotiating uneven terrain and heavy loads
 
Tech Specs 
Upper Material: roughtout leather, nylon
Waterproofing: Dry-Best
Removable Liner: no
Thermo-moldable Liner: no
Closure: lace
Sole: Vibram Couloir
Crampon Compatibility: strap-on
Claimed Weight: [pair] 1824 g
Recommended Use: mountaineering
Manufacturer Warranty: 1 year