A super wide range of motion of 55 degrees makes a hike or skin exit feel like a walk in the park. And yet, when you lock down all four buckles for the descent, the Zero G Tour Pro's true 130 flex shines through, making this hiking boot a universal downhill performer. Minimal resistance for confident climbs and turns on the descents, Zero G Tour Pro is the boot chosen by some of the world's most accomplished ski mountaineers. Suddenly the mountains on the horizon don't seem so far away.