Long underwear — a.k.a. long johns, thermals, base layers, or whatever else you want to call the cozy, body-hugging tops and bottoms worn beneath looser clothes in cold weather — is my favorite way to ...

Layers are essential for maintaining warmth in the cold. A good base layer wicks away sweat so you don’t end up stuck in wet clothes. Merino wool is a natural fiber that, in addition to providing ...