When a foot-wide ledge becomes your bed for the night, this women's compressible zip-neck top helps turn up the heat.

Underwear TopsBase Layer Tops

Lightweight and moisture-wicking, the prAna Chakara bra is the kind of comfortable, easy-to-wear everyday essential that you can use for working out or running errands—or both!

UnderwearSports Bras

Pick up your pedaling pace! The women's Fourlaps Circuit sports bra is ready to support you with a wicking, compressive fabric and mesh back for ventilation at the peak of your workout.

UnderwearSports Bras

When layering for mild-weather adventures, start with the women's Smartwool Classic All-Season Merino base layer bottoms. They're made from lightweight jersey with a supersoft next-to-skin feel.

Underwear BottomsBase Layer Bottoms

A great top for any season, the Smartwool Classic All-Season Merino top wicks moisture and regulates temperature, making it ideal as a fall base layer or a single layer when summer backpacking calls.

Underwear TopsBase Layer Tops

With a form-hugging fit, the Smartwool Classic All-Season Merino Lace long-sleeve tee is a great first layer for high-energy activities—like hiking, jogging or rowing crew—in cool or warm weather.

Underwear TopsBase Layer Tops

Made from a lightweight jersey, the women's Smartwool Classic All-Season Merino long-sleeve base layer top is just as comfy layered under your ski jacket as it is worn alone for summer backpacking.

Underwear TopsBase Layer Tops

Designed to be your go-to for warm or cold weather, the women's Smartwool Classic All-Season Merino quarter-zip top features lightweight, soft merino wool with a nylon core for increased durability.

Underwear TopsBase Layer Tops

Made from their lightest-weight jersey and built for comfort, the women's Smartwool Classic All-Season Merino quarter-zip base layer top is game for any adventure, any time of year.

Underwear TopsBase Layer Tops

Update your cold-weather kit with tights that adapt to your activity. Smartwool Classic Thermal Merino base layer bottoms offer cozy warmth for stop-and-go activities and feature an improved fit.

Underwear BottomsBase Layer Bottoms

Serving up warmth for stop-and-go activities and an improved fit, the women's Smartwool Classic Thermal Merino base layer bottoms in plus sizes are a reliable, cozy addition to your cold-weather kit.

Underwear BottomsBase Layer Bottoms

Delivering exceptional performance and improved functionality, the women's Smartwool Classic Thermal Merino crew top maintains your warmth and active comfort as you hike, ski, bike and more.

Underwear TopsBase Layer Tops

Whatever high-intensity activity you get into, the women's Smartwool Classic Thermal Merino quarter-zip top delivers exceptional performance and improved functionality to keep you warm, dry and comfy.

Underwear TopsBase Layer Tops

Stay comfortable, dry and warm in the plus-size Smartwool Classic Thermal Merino quarter-zip top while enjoying your favorite activities year-round. An improved, active-minded fit is designed to move.

Underwear TopsBase Layer Tops