Base Layer

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...

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...

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...

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...

The weather may be cold outside, but you don't let that keep you from getting out and working hard. And if you're looking for a trustworthy compani...

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...

We designed Capilene Cool Trail, our softest performance knit, to keep you cool and dry when you're active, while providing day-long, next-to-skin ...

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...

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...

17 countries. 6 weeks. One pair of award-winning underwear. (Ok, maybe two.) Join the ExOfficio travel underwear revolution. Just toss your Give-N-...

17 countries. 6 weeks. One pair of award-winning underwear. (Ok, maybe two.) Join the ExOfficio travel underwear revolution. Just toss your Give-N-...

The active fit, ultralight mesh, and smooth fabric waistband make the Sport Mesh the most comfortable performance underwear you'll ever put on. Whe...

Join the thousands of people who have discovered the ExOfficio travel underwear revolution. Just toss your Give-N-Go's in the laundry or wash them ...

Join the thousands of people who have discovered the ExOfficio travel underwear revolution. Just toss your Give-N-Go's in the laundry or wash them ...

Join the thousands of people who have discovered the ExOfficio travel underwear revolution. Just toss your Give-N-Go's in the laundry or wash them ...

Join the thousands of people who have discovered the ExOfficio travel underwear revolution. Just toss your Give-N-Go's in the laundry or wash them ...

Join the thousands of people who have discovered the ExOfficio travel underwear revolution. Just toss your Give-N-Go's in the laundry or wash them ...

Join the thousands of people who have discovered the ExOfficio travel underwear revolution. Just toss your Give-N-Go's in the laundry or wash them ...

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...