We like to move light and fast in the backcountry, yet we still value reliable performance on the descents so we trust the Marker Alpinist 12 Binding. Three heel riser heights offer comfort and efficiency on steep switchbacks and long, flat slogs alike, and are easy to shift for fast angle changes on the go. Weighing in at just under a pound per binding, it's obvious why the Alpinist is an uphill-hungry machine.