You don’t want to be too hot or too cold. You want to be just right. And you want to be—and stay—dry. The key to warmth is making smart apparel choices and layering. On a sunny day, you may only need two layers: a turtleneck or long underwear layer and, over that, a waterproof, outer layer. Bringing a just-in-case middle layer—a fleece or wool sweater—will ensure you’re ready for any weather. You can always take off or add layers as the conditions on the mountain change. We suggest dressing in three layers: inside, middle, and outer.
Inner or Wicking Layer
Since the inner layer is worn next to your skin, it’s important to pick a material that pulls moisture away from your skin, a process called wicking. Quick-drying polyester jersey fabric offers great moisture management and breathability. Silk is also a good natural fabric that pulls away moisture from the skin. Warm thermal underlayers made of wool or a synthetic fabric will also set you up for success on the mountain.
Middle or Insulation Layer
For the middle layer, look for pullovers, turtlenecks, and vests that will keep you warm by trapping air between the fibers and insulating you. A great material for this is fleece. Puffy jackets or vests that can be added or removed will help to regulate your body temperature as conditions change.
Outer or Shell Layer
Your jacket and pants should guard against the elements and keep out the snow while allowing some breathability. When looking for a jacket, look for one that’s waterproof with a snow guard or is long enough to overlap your pants by a couple of inches. This will help prevent snow from getting into your pants or getting your layers wet.
