Men's Nuyarn® Merino Wool Tech Boxer Brief


14 reviews
Color: Vented Charcoal
Best Used For:

Daily. Hiking. Camping. Travel. Casual. Running. Hunting. Outdoors

UnCover all your bases with the Wūru® Men’s Merino Wool Tech Boxer Brief, now featuring  Nuyarn® and Made in the USA. Featuring flatlock seams and a horizontal fly - Support where you need it, access when you want it!

The World’s First Performance Wool. Nuyarn® offers a proprietary spinning technology that releases the natural performance characteristics of wool like no other. Making the once impossible, possible.  

Technology you can feel!


Product Weight Medium: 3oz

Fabric: 85% Merino, 15% Nylon - 17.5 Micron

Fabric Weight: 125gsm (Equivalent warmth: 168gsm ringspun fabric)

Featuring Nuyarn® Technology

Knit in Vietnam at Bluesign® & Global Organic Textiles Accredited Facility

Made From: Non-mulesed Australian merino wool

Spun in an OEKO-TEX® Accredited Facility – Does not use environmentally harmful chemicals meeting or exceeding worldwide safety standards 


  • Handmade in the USA from premium Australian wool
  • Flatlock seams to eliminate chafing  
  • Horizontal fly -  Support where you need it, access when you want it
  • Naturally odor resistant and antibacterial.
  • Exceptionally soft Merino wool for pure comfort.
  • Blended with a touch of nylon for extra durability.
  • Made from sustainable and ethically sourced fabric.


Machine Wash Cold Gentle Cycle.  Do Not Bleach.  Tumble Dry Low (hang/flat dry for best results).  Cool Iron As Needed.  Do Not Dry Clean.

Customer Reviews

Based on 14 reviews
Al B. (Eau Claire, US)
Do you recommend sizing:
Fits Small
Fits Large
Met my expectations.

I bought these to replace synthetics. I have transitioned away from synthetics. These worked great for a day of biking. I believe these will work great for hiking and backpacking.

I wanted a natural material that would perform well, dry quickly and be comfortable to wear. These did all of it well.

Also, made in USA which is very important to me.

Harald H. (Hartford, US)

Haven’t been this comfy in my skin ever , a new experience and I won’t go back to synthetics , thank your

Darrell S. (Alpharetta, US)
Vented Charcoal style is the real deal

This is my 2nd review for the Wuru boxers only because I recently ordered the Vented Charcoal version. I wasn't sure how merino wool would handle all the holes but have been really impressed by the quality so far. I won't be wearing these in cold weather cause you can feel the venting and the cooling effect. They should be excellent for late spring and summer backpacking trips or anything where you're working up a good sweat. Another great product...oh, and they are true to size!

Darrell S. (Cumming, US)
Passed the test!

Took these on a 2 day backpacking trip as soon as they arrived. Muggy Tennessee days with 3K elevation gain and a full pack.

They wore perfectly, dried quickly, didn't ride up or bunch, and I was able to wear them both days including sleeping in them with no issues. I'm trying to get completely off petroleum clothing and these were just excellent. I was really surprised at how little of the sweat I even noticed even pulling big miles on trail. I am about to order several more pair!

Peter E. (Weston, US)

Super comfortable; nice fit (medium - I'm 5'8" 155lbs). Just got them and have only worn them a few times, so I can't speak to durability. I hope I don't screw them up by hot water washing and tossing in dryer!