The Columbia® Expeditionist Extreme is built for harsh cold-weather conditions. Crafted with full-grain leather upper with scratch rubber protection, OutDry™ waterproof technology, and heavy insulation (400 g), these boots are made to shield your feet from cold, snow, and wet terrain. An Omni-Heat™ Infinity lining reflects your body heat back toward you, while the TechLite+™ midsole cushions every step and delivers stability. The fiber-rubber outsole, Omni-Grip Ice, delivers excellent traction even on ice, giving confidence with each step.