The 12 best thermal underwear for warmth all winter long, according to experts
Whether you’re into snow sports or simply want to prepare for
winter
weather, base layers can help insulate heat while wicking sweat away from your skin. Those base layers can include thermal underwear, also known as long johns, as well as other types of apparel like shirts and
accessories
.
Below you’ll find everything you need to know about base layers, including tips on how to shop for them, from Ashleigh McClary, a hiking enthusiast and
Backcountry
"
Gearhead"
(outdoor expert and customer service specialist), and Ben Clower, an outdoor enthusiast and marketing coordinator at
JAX Outdoor Gear
in Colorado.
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