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Red Fleece, Blue Fleece, Grey Sweatpants, Black Zip-up
Credit: Courtesy of retailers as credited

Staying warm during the winter means bundling up with your favorite parka, weather-resistant boots, and cold weather accessories. But in addition to all your outerwear, it starts with a cozy outfit. If you want to stay warm for a day spent indoors or on-the-go, we've rounded up the most comfortable winter activewear on the internet.

From merino wool base layers to bright leggings that will add a pop of color to your wardrobe, keep reading for our top activewear picks for winter.

Everlane ReNew Fleece Raglan Sweatshirt

Light Blue Fleece Women's Pullover
Credit: Courtesy of Everlane

This cozy fleece is a modern take on the classic pullover sweatshirt. It can be worn on its own or as a layering piece for extra warmth.

To buy: everlane.com, $48

Spiritual Gangster Amanda High Waist Leggings

Pink/Purple Women's Leggings
Credit: Courtesy of Nordstrom

These leggings have the look of your favorite snuggly long underwear, but they're designed to move with you through any type of workout.

To buy: nordstrom.com, from $88

Icebreaker 250 Vertex Merino Wool Half Zip Base Layer Top

Black and Grey Patterned Women's Half-zip Sweater
Credit: Courtesy of Nordstrom

If you'll be spending a lot of time outdoors this winter, a thermo-regulating base layer is a must-have. This half-zip top from Icebreaker is a lightweight layer that will be sure to keep you warm without adding extra bulk.

To buy: nordstrom.com, $140

J.Crew Superplush Sherpa Full-zip Jacket

Women's Red/Orange Sherpa Fleece Zip-up
Credit: Courtesy of J.Crew

An ultra-soft Sherpa is a must-have this winter. Try out the trend and give your outfit a pop of color with this zip-up jacket, which also has plenty of convenient pockets.

To buy: jcrew.com, from $91 (originally $128)

WONE Oversized Fleece Sweatshirt

Black fleece sweatshirt pullover

This luxe fleece pullover is the perfect minimalist piece to add to your winter wardrobe. It's made from Polartec Power Stretch Pro fabric, so it remains breathable and moisture-wicking while keeping you warm. Plus, the oversized fit allows you to layer for extra-chilly days.

To buy: net-a-porter.com, $450


Grey printed hoodie base layer
Credit: Zappos

This cozy base layer from Olympic skier Kari Traa's line is unique for its playful print as well as the addition of a hood. It's made from merino wool, which means that the material allows for comfort and stretch while keeping you warm.

To buy: zappos.com, $96 (originally $120)

Girlfriend Collective High Waist 7/8 Leggings

Golden Yellow Women's Long Leggings
Credit: Courtesy of Nordstrom

A pair of bright, comfy leggings will be sure to add a little warmth to your wardrobe, even if the temperatures outside say otherwise.

To buy: nordstrom.com, $68

J.Crew Retro Striped Jogger Pants

Grey Women's Joggers
Credit: Courtesy of J.Crew

These vintage-inspired sweatpants are part of J.Crew's new Weekend Collection, but they're so comfy that you'll want to wear them every day.

To buy: jcrew.com, $80

Alo Yoga Duality Reversible Sherpa Jacket

Pink Zip-up Women's Sherpa Jacket
Credit: Courtesy of Alo Yoga

If you want to try the Sherpa trend but still want a versatile option, this reversible jacket from Alo Yoga is just what you're looking for. Whether you wear the Sherpa fleece or woven side out, you'll be sure to stay warm in this jacket.

To buy: aloyoga.com, $248

Icebreaker 200 Oasis Merino Wool Jersey Base Layer Leggings

Grey women's leggings
Credit: Nordstrom

When you're skiing, hiking, snowshoeing, or doing any sort of outdoor activity this winter, a pair of comfortable base layer leggings is a must. This merino wool pair from Icebreaker is soft and breathable, and will be sure to keep you warm without adding extra bulk to your outfit.

To buy: nordstrom.com, $95

Daily Ritual Supersoft Terry Patch-pocket Joggers

Grey and Black Women's Joggers
Credit: Courtesy of Amazon

These joggers are soft and cozy but tie at the waist with a ribbon, making them just as flattering as they are comfortable.

To buy: amazon.com, from $9

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