Designed in collaboration with Urban Zemmer, the World Record Holder in the Vertical Kilometer, the La Sportiva VK was created to give you the traction needed to climb the steepest mountains without reducing your ability to pick up the pace. A rock guard in the forefoot protects you from harsh terrain while offering a springy underfoot sensation. Topped off with a seamless knit fabric and an innovative lacing system, the upper secures your foot to the platform and reduces irritation.