Merino wool underwear built for ultimate comfort, function, and durability. These best-selling wool boy shorts are a must-have for all of your activities.

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Built For The Active Lifestyle

Underwear is an essential part of the daily wardrobe, so why not have softest, comfiest fabric where it matters most!

The Perfect Fit

Choose from several styles of women's Merino wool undergarments, including the perfect layering pieces: our bralettes and camis; and our great-fitting bikini briefs, thongs, and our popular boy shorts, recently included in "Best Hiking Underwear for Women," by Best Hiking Magazine.

(m)Force™ Nylon Core Technology

Our Merino wool underwear features our exclusive (m)Force™ Nylon Core Technology. We engineered super-soft Merino next to skin to achieve unmatched comfort and performance and wrapped it around a continuous nylon filament for improved strength. The result is a fabric that holds it shape, dries faster and lasts longer than 100% Merino at similar weights. This means our (m)Force fabrics have all the technical benefits of 100% Merino wool with the enhanced durability typically associated with synthetics.


We let our reviews speak for themselves.

"I wear nothing else. Hiking, walking, stair master, Pilates, ALL of it they perform. 80% humidity, 100F still the best."

Heather M

Merino Boy Shorts

"great cut and fit, not at all itchy. Stays put (doesn’t ride up or fall down). Highly recommend."

Christine L

Merino Thong

"So comfortable! Perfect for small chested women. Offers enough support for me. Extra warmth. Best bra I’ve ever owned!"

Kiva N

Merino Bralette

"I was surprised by how comfortable and supportive this bra is. I wanted a wool bra for all day winter sports that would dry quickly. I’m a climber, so I have bigger lats and shoulders and this bra works really well. I’ve been wearing it a lot, even for lower impact activities!"

Megan H

Send-It Seamless Sports Bra

"I wore one for a 2 hr hot sweaty evening hike and after the sweat dried overnight, it looked and smelled like it was freshly washed!"

Katie S

Merino Boxer Bralette