If you're warm and comfortable, the winter outdoors is glorious. If you're cold and miserable, it bites. Icy feet and wooden toes are particularly aggravating, even potentially dangerous, when temperatures really plummet. Better to invest in the right pair of winter boots and let your feet bask in warm, comfortable glory all season long.

DID YOU KNOW?
Feet are the sweatiest part of the body after armpits.

Boot Basics
Winter boots insulate from the cold using a variety of synthetic and natural materials. Regardless of the type of insulation, you can estimate warmth with a simple rule of thumb: The thicker the insulation, the warmer the boot. Ignore manufacturers' temperature ratings, except as a benchmark for comparison between styles by the same company. Warmth is also increased if boots fit properly. Most importantly, there should be minimal extra space around your feet; large air pockets are difficult to keep warm and provide potential channels for heat to escape from your boot tops. Most winter boots are roomy and wide, in part to accommodate thicker socks. Shop carefully to avoid a loose, sloppy fit if you have narrow feet, low arches, or an otherwise low-volume foot. Lastly, winter boots vary dramatically in stiffness, or how difficult they are to flex. To gauge this crucial feature, hold the front and back of the boot and twist side-to-side. Your intended activity will determine the boot's optimal stiffness.

Backyard Boots
Is the boot soft and flexible? Does it offer a simple lacing system or pull-on, lace-free convenience? Is there lots of insulation? These types of boots are ideal for activities like shoveling the driveway, walking short distances around town or across gentle terrain, or standing around in the cold for prolonged periods. They go on and off easily, provide ample insulation, and are usually on the inexpensive end of the boot spectrum ($100 or less). Many feature a rubberized, fully waterproof outer layer around the lower boot, though the soft upper is typically only water-resistant. They are a good all-purpose choice for day-today use, but the loose fit and flexible soles will fatigue your feet on longer winter rambles or snowshoe excursions.

All-Purpose Boots
Does the boot have a stiffer, more rigid sole? Offer a more adjustable, secure lacing system, plus waterproof materials throughout? You've found a style perfect for a wide range of cold-weather activities and terrain, from walking around town to all-day winter hikes and snowshoeing excursions. The stiffer sole provides excellent support for your feet and ankles over steep or uneven terrain, and the waterproof design keeps heat-sapping moisture from getting inside. Your feet should fit snugly with little to no movement inside the boot. Most critically, your heel should not slide up and down inside the boot—the number-one cause of blisters. Some crampons are compatible with this type of boot; look for flexible, strap-on versions (rigid crampons are uncomfortable and difficult to secure). Expect to pay $100 to $200 for a boot in this category.

Extreme Boots
Can't flex the boot at all? Does it have a removable insulated liner and outer shell made of plastic or some other durable, waterproof material? You've found a boot designed for big winter adventures such as ice climbing, venturing above treeline, or hiking on steep ice-covered trails, where crampons and serious warmth are likely required. This style of winter footwear—usually referred to as mountaineering or double plastic boots—provides significant insulation, accepts any type of crampon, and allows you to go anywhere, anytime, in any conditions. But they are also heavy (5-plus pounds per pair), cumbersome on flat terrain, and expensive ($300 to $600-plus). They're the perfect winter boots if you're looking to go big in every way.