There’s no excuse not to go outside with these warming, sweat-wicking base layers from Carhartt, Eddie Bauer and more.

From a merino wool base layer to viral HEATTECH fabrics, these thermals provide extra warmth without the added bulk.

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

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

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

"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 ...

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 ...

Organizing this list was no easy task, as our contributors had to sort through many base layers, armored and not, before making our top picks for 2023. One of the most often neglected things when ...

If you’re part of the “always freezing” crowd — especially if you live in a colder climate — warm winter base layers are a wardrobe must, from thermal undershirts and long johns to cozy socks. Many of ...