Traveler's Gear Box: When You Need Good Footing, Consider YakTrax
Walking through many national parks in winter can be tricky. In Yellowstone National Park, for instance, the boardwalks through geyser basins can be snow-and-or-ice-covered, hiking trails in Grand Canyon National Park can be icy, and trails in countless other parks that experience snowy winters can be slippery. These are definitely instances when you need good footing.