THE EXTREME COLD WEATHER BOOT: The boots were originally designed to protect US soldiers’ feet from cold injury and frostbite in extreme cold weather areas. But over the years, civilians started wearing the boots for work and recreation. The bunny boot (named after the Snowshoe Hare of Alaska) is the most popular choice among serious polar explorers, ice fishers, trappers, and snowmobile riders in Alaska and Antarctica. The ski shelf allows for attaching to ski and snowshoe bindings. A vapor lock system maximizes insulation by creating a vacuum between the layers of rubber and felt, trapping warmth and ensuring protection against extreme cold weather temperatures.