Sizing: If your boot doesn’t have a lot of insulation, consider sizing up at least a half size, says Martin.

Microspikes will fit over most any shoe, says Martin, whereas crampons are best with shoes that have a lip on the heel for the crampon to hook onto, so keep an eye out for that feature if you think you might want that option for your boot. For ventures into more technical terrain (think: steep or icy trails), you may need to consider adding traction devices like microspikes or crampons to the bottom of your boot. Any rigid, spiky-looking bottom will probably work well if you’re just using your boots to walk around town, says Martin.

For the outside of the boot, look for water-repellant materials like Gore-Tex and adequate traction on the bottom to minimize your risk of slipping. Wool or wool synthetics are a good bet, says Mickey Martin, the Colorado-based founder of The Virtual Sherpa, a hiking guide site, who is an avid hiker and endurance athlete. Materials: Look for a liner that is made with warm, moisture-wicking, lightweight and breathable fabric so your feet stay comfortable and dry without overheating.What to Consider About The Best Winter Boots

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