Base Layer

We've updated our Men's Merino 250 Base Layer Bottom to bring you a better fitting, more functional tight. The technical benefits of 100% Merino wo...

Every epic adventure starts with a solid foundation, and the last thing you want to overlook is the first layer you put on. Ultra-comfy Merino next...

Change can be a good thing. We've improved the fit on our 100% Merino bottoms with new side seams and a curved seam in the back to help provide a s...

From trekking across Thailand to traversing the toughest stretches of Baja, we've spent over 20 years perfecting the art of adventure-and underwear...

Our most versatile baselayer: warm, breathable, quick-drying and with HeiQ Fresh durable odor control for daily use. The Capilene Midweight Crew hi...

Our most versatile baselayer: warm, breathable, quick-drying and with HeiQ Fresh durable odor control for daily use. The Capilene Midweight Bottoms...

With a new fit that is designed to reduce excess fabric, our Women's Merino 250 Baselayer Pattern Bottom will help keep you looking good, while fee...

No Seams. Plenty of comfort. Our Women's Seamless Bikini Boxed features seamlessly knit Merino wool for enhanced comfort next to skin and a mesh kn...

Our new and improved Women's Merino 250 Base Layer 1/4 Zip is here to bring you a better feeling, better performing, and better-looking garment. As...

Need a tee that does it all and still looks good? Our freshly redesigned Merino 150 Short Sleeve works undercover as a baselayer on cool mornings o...

From taking the chill out of cool morning bike rides to hiking to the summit of Quandary Peak, you need a versatile layer that works as hard as you...

Whether you're lounging at home or trekking to parts unknown, ultra-comfy, responsibly sourced Merino next to skin helps regulate body temperature,...

Capilene Air is the most advanced baselayer we've ever made. It has the greatest range of warmth and comfort of any of our baselayers, insulates ev...

The Active Mesh Bra's remarkable, moisture-wicking, body-conforming synthetic fabric provides low-compression, fluid support while the seamless con...

Made from our warmest baselayer fabric, these bottoms will keep you warm even on the coldest summits. Features a covered elastic waistband, flatloc...

Our best selling and warmest baselayer just got a little more refined with an improved fit, chafe-free seam construction and panels that offer more...

Performance micro-mesh underwear that dries in under an hour, the cool-wearing Sender Briefs are made from moisture-wicking 89% recycled nylon/11% ...

From trekking across Thailand to traversing the toughest stretches of Baja, we've spent over 20 years perfecting the art of adventure-and underwear...

From trekking across Thailand to traversing the toughest stretches of Baja, we've spent over 20 years perfecting the art of adventure-and underwear...

From trekking across Thailand to traversing the toughest stretches of Baja, we've spent over 20 years perfecting the art of adventure-and underwear...

From trekking across Thailand to traversing the toughest stretches of Baja, we've spent over 20 years perfecting the art of adventure-and underwear...

From trekking across Thailand to traversing the toughest stretches of Baja, we've spent over 20 years perfecting the art of adventure-and underwear...