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...

We've updated the fit of our Men's Merino 250 Base Layer 1/4 Zip to improve functionality while also enhancing aesthetics. As one of our heaviest b...

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

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...

A classic, all-around polyester baselayer made with 50-100% recycled content. The smooth, soft face makes for easy layering. Hollow-core yarns and ...

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

Ultrasoft technical top made with quick-drying and moisture-wicking fabric to keep you comfortable when you're working hard in conditions ranging f...

Ultrasoft technical top made with quick-drying and moisture-wicking fabric to keep you comfortable when you're working hard in conditions ranging f...

Our most versatile technical top is made for use on trails or on the water, with HeiQ Fresh durable odor control and 50+ UPF sun protection. These ...

Our most versatile technical top is made for use on trails or on the water, with HeiQ Fresh durable odor control and 50+ UPF sun protection. These ...

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...

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...

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...

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...