Great for wearing under other layers, the women's Kari Traa Fryd base layer pants feature a supersoft, quick-drying material that moves with you and cuts out chafing so you can get out exploring.

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Great for wearing under other layers, the women's Kari Traa Fryd base layer top features a supersoft, quick-drying material that moves with you and cuts out chafing so you can get out exploring.

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From trekking in Thailand to traversing tough terrain in Baja, ExOfficio has spent decades perfecting the art of adventure—and underwear. Here are their Give-N-Go 2.0 Full-Cut briefs for women.

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From trekking across Thailand to traversing the toughest stretches of Baja, the ExOfficio Give-N-Go 2.0 Sport Mesh bralette provides comfortable, low-impact support for wearers with A–C cups.

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Set the groundwork for greatness with the Janji Groundwork Long bra. It provides essential coverage for high-output movement and even doubles as a sleek stand-alone crop top.

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Paddlers needing maximum insulation for those frigid adventures will appreciate the warm and breathable NRS H2Core Lightweight Union Suit. Its H2Core Expedition fleece offers comfort under a drysuit.

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Harnessing the warming power of Heatwave™ technology, the men's Seirus Heatwave Lite Reversible base layer bottoms reflect heat back to your body, and are now available in a lighter-weight design.

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Harnessing the warming power of Heatwave™ technology, the men's Seirus Heatwave Lite Reversible Long-Sleeve base layer top reflects heat back to your body, and is now available in a lighter design.

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Harnessing the amazing warming power of exclusive Heatwave™ technology, the men's Seirus Heatwave Reversible base layer bottoms reflect heat back to your body to keep you warm on cold-weather outings.

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Harnessing the warming power of Heatwave™ technology, the men's Seirus Heatwave Reversible Long-Sleeve Crew base layer top reflects heat back to your body to fend off winter's chill.

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Built for a wide range of sports and outdoor activities, the Saxx Hot Shot boxer briefs come equipped with highly breathable, quick-drying DropTemp™ tech to keep you cool when temps are high.

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Pack less and do more with the men's Mons Royale Icon Raglan top. You'll go from bike laps to alpine climbs and everything in between without having to change shirts.

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Laser-cut for a clean finish and barely-there feel, the sleek Kari Traa Idunn Hipster underwear fit well under your workout tights. They also give 4-way stretch and dry quickly for functional comfort.

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Designed to help you go the distance, the New Balance Impact Run AT Bra features a spacious back pocket and bungee system to keep your essential gear easily accessible while you're out on the trails.

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