The SCARPA Ribelle® Run Kalibra G takes the best parts of our most technical running shoe and combines them with a few mountaineering-boot-inspired features for an all-weather, all-terrain juggernaut of a trail runner. With the same profile as the Ribelle® Run, the Kalibra G can handle precise footwork in technical terrain without batting an eye. The specially designed sole with the ultra-sticky PRESA rubber offers reliable traction, no matter what condition the trail is in. Because you'll be headed out in a variety of conditions, we included a Polartec® Windbloc™ stretch gaiter to keep mud and snow out, as well as a BOA® Fit System that delivers a precise, secure fit thatallows micro-adjustability on the go. 4mm of drop gives just enough padding to cushion the occasional heel strike, while still giving you that low drop heel you want for a more natural stride.