Thanks to its merino wool fabrication and flatlock construction, the Kari Traa Elenore women's long-sleeve base layer top feels cozy and comfy next to the skin, no matter the activity.

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Designed for low-impact activities, The North Face Elevation bra is made with moisture-wicking material for comfort during your workouts, whether you're out on the trail or at the gym.

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Offering superior temperature regulation without the bulk, the women's tasc Performance Elevation Merino base layer bottoms deliver warmth and moisture management for cool-weather outdoor adventures.

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Look no further for that perfect base layer. The women's tasc Performance Elevation Merino T-shirt offers superior temperature regulation and moisture management without the bulk.

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Let it snow! The women's Kari Traa Else Half-Zip base layer top blends soft merino wool and modern fabric mapping to keep you warm and comfortable on or off the slopes.

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Breathable and supportive, the Arc'teryx Essent bra is built for mountain adventures with a knit material that balances outstanding stretch with reliable support, for a great next-to-skin feel.

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Made from Chakara® performance stretch jersey fabric, the prAna Everyday bra moves with you, whether it's a vinyasa day or a pranayama day.

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Made with high-performance Chakara™ stretch jersey fabric, the prAna Everyday Support bra delivers just the right level of compression for your workout so you can move with confidence.

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With the same silhouette as the original but in a lighter-weight blend, the women's Wild Rye Evie Lite Raglan base layer top will keep you warm (but not too warm) from spring skiing to summer camping.

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Made with 100% merino wool, the Wild Rye Evie raglan base layer top offers a looser, contemporary fit and longer silhouette that work to keep you comfortable on the skin track or chairlift.

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A thermal onesie purpose-built for women who consider every season paddling season, the NRS Expedition Union Suit features a fleece interior, stirrups, gasket-friendly cuffs and a dropseat.

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Named for the rock formation in Boulder, the women's Artilect Flatiron 185 base layer crew top is a great companion for getting vert or counting off switchbacks. It's soft, breathable and warm.

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An ideal base layer for getting vert or counting off switchbacks, these women's Artilect Flatiron 185 leggings provide soft, breathable warmth while you explore outdoors.

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Kari Traa Floke base layer pants blend fine merino wool with tech fibers to create a soft, medium-weight fabric with good warmth, natural odor resistance and breathability for cold-weather activities.

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