14 Best Thermals You’ll Love for Winter

As thermals goes, we love the active nature of these Outdoor Voices leggings.

Whether you’re doing some cold-weather running or slipping them on under a pair of ski pants, they’re crafted of the company’s FrostKnit material that keep you warm while also wicking away the sweat.

Smartwool is one of the OGs for performance layers, beloved by skiers and winter hikers alike. Make sure to wear them inside of your ski suit and you are good to go anywhere!

Sometimes thermals comes in the form of a bodysuit, like Perfect Moment’s warm sport turtleneck style.

You’ll love it because it’s as warm and sweat-wicking as your favorite thermal underwear top, but with the added bonus of a bodysuit style that won’t bulk or come un-tucked as you move.

We love this thermal underwear top because we can zip it up or down with ease, depending on the weather.

And it’s seamed allover to provide a comfortable fit that’s slim without feeling too tight, getting rid of the bulk while adding performance warmth at the same time.

Add a pop of color to your ski bunny look with this colorful striped base layer from performancewear company Goldbergh.

If you’re looking for thermals with a little bit more heft, shop this ribbed base layer top from Cordova.

It’s crafted of an off-white hue, so it will go with anything that you layer under or over, all ski season long. Perfect to go under your apres ski sweaters.

Leave it to Sweaty Betty to add a little whimsy to your ski thermal underwear sets, with warm jacquard knit base layer leggings printed with a colorful skier pattern.

We love a onesie, especially one with style. We love Matek for all of their performance layers, but one of our favorites is definitely the thermal underwear one-piece.

Another performancewear favorite for skiers is Icebreaker, whether you’re shopping a facemask or—yes—thermals.

Shop their merino wool collection for sweat-wicking bottoms that will keep you warm while you’re out and about.

Patagonia has created Capilene Air, which is a material they have blended with wool for “maximum warmth and breathability,” making for the perfect cold-weather active thermal underwear top—or bottom!

For a more convertible lightweight thermal underwear top, shop this L.L. Bean hoodie that you can turn into a turtleneck or hooded top with ease.

When it comes to affordable thermals, Uniqlo’s HeatTech items take the cake. With tops and leggings alike, it’s a super warm, sweat-wicking option for all your slope side needs.

If you love a matching moment, but don’t want to shop a onesie, look to Aviator Nation.

They’ve created a thermal base layer set that makes you feel cool and fashionable when it comes to your thermals, as well as warm while you exercise in the cold.

Sweat-wicking on the inside and insulated warm on the outside, these thermal underwear leggings are great whether you’re going out for a run in the cold or layering them underneath ski pants for a day on the slopes.