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

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!

Choose from two lengths of super smooth, ultra-comfortable boxer briefs made from Merino wool with (m)Force Technology for increased durability and a touch of Spandex for long-lasting stretch and recovery.

Nature's Fabric

In addition to being a natural, renewable, and biodegradable fiber, Merino wool offers unparalleled comfort and versatility resulting in the layers available. Merino wool regulates body temperature by releasing heat and keeping sweat away from your skin. It is also naturally antimicrobial, repelling bacteria that cause body odor, to stave off stink.

(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.

"WAY better than cotton briefs!"

John p

Merino Boxer Briefs

"Wore these during a ski trip where temperatures regularly dipped into -10s°F. They kept me warm and comfortable both on and off the slopes."

Jonathan C

Merino Boxer Briefs

"Breathability! I have several pair for a reason. Quality and comfort! I prefer the 9 inch seams over the shorter option as the other seem to ride up a bit but not these!"

David T

Merino Long Boxer Briefs - 9 inch

"I took them on a camping ultra marathon relay weekend. I love the length, finally finding boxers that come down over my quads and don't roll up. So glad I found these!"

Gaelan S

Merino Long Boxer Briefs - 9 inch

"I’ve never owned wool boxer briefs before, but I’ve already purchased another pair after wearing them for awhile. I haven’t had any riding up and forget I have them on, which is always the goal. Highly recommend!"

Jared K

Merino Boxer Briefs