Amazon reviewers can vouch for the toastiness of these long johns and other base layers.

Save on bestselling snowstorm-ready base layers, like Uniqlo's Ultra-Warm long-sleeves, turtlenecks and leggings that ...

Adidas has women's base layers on sale for just $8. These highly rated long-sleeve tees feature sweat-wicking and stretchy ...

A decent base layer helps by trapping warm air close to your skin and keeping you more comfortable whether you’re shoveling, ...

The merino-polyester blend balances warmth and moisture management, with a soft feel that works well for multi-day use. Ideal for winter runs, ski touring or fast-paced winter travel when you need ...

It’s officially cozy season, so it’s the perfect time to shop for a new set of the best base layers to wear under your ski clothes or winter hiking outfits. However, with so many options and a wide ...

"Hearst Magazines and Yahoo may earn commission or revenue on some items through these links." Building that ski outfit begins, of course, with the base layer. You want the base layer—also called long ...

There’s no doubt that merino wool is an insulating rockstar among outdoorsmen and women. Thanks to its warmth, breathability, moisture-wicking, and odor-repelling performance, it has a massive fan ...

I’d need all my fingers and toes to count the number of times I’ve reminded friends and family visiting Colorado to wear an extra sweatshirt or toss a spare jacket in their pack. Relatives visiting ...