The Lange XT3 TOUR Alpine Touring Boot offers exceptional uphill ability when compared to other downhill-oriented touring boots. When we are skipping up the skin track the Active Power V-Lock provides us with 53 of motion so that we can stride confidently to the summit. With a quick flip of the switch, we can engage ski mode and really lean into the 105 flex and trust the 99mm last to transfer power to our edges.