Experience the power of the Zero G Tour, a four-buckle ski boot for intermediate to advanced backcountry skiers. The Zero G Tour weighs 1,500 grams (for a size 26.5) and features an uber-wide 55-degree range of motion, so gliding up the skin track feels like a breeze. And yet, when you lock down the four buckles for the descent, the 110 flex turns the Zero G Tour into a great downhill performer.