Women's Nuyarn® Merino Wool Tech Baselayer Long Sleeve 2.0

Size Guide

Cover all your bases with the Wūru® Women's Baselayer Tech Long Sleeve, designed to be a tight next to skin layer to follow your every move Made in the USA and now featuring Nuyarn®.  Wūru sources only premium Merino wool to ensure that soft next to skin feel, making it the ideal base layer. 

Nuyarn® offers a proprietary spinning technology that releases the natural performance characteristics of wool like no other. Making the once impossible, possible.  

The World’s First Performance Wool - Technology you can feel!


Product Weight Medium: TBD

Fabric: 90% Merino, 10% Nylon

Fabric Weight: 145gsm (Equivalent warmth: 195gsm ringspun fabric)

Knit in Vietnam: 17.5 Micron - 145gsm

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
  • Strategically placed thumbhole for enhanced movement
  • Flatlock seams to eliminate chafing  
  • 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.

Maintain Your Merino

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 31 reviews
Carly p. (Soldotna, US)
Nice fit & quality but the color is a bit off

I really like this top but the blue I got seems to be a lot more brighter than the shirt in the pictures - not really a color I’d regularly wear but will make a great baselayers.

Amanda S. (Golden Valley, US)
Nice base layer

The cut is a little weird on me, the arm pits bunch up a bit. It’s not too tight in armPit, the material just doesn’t lay nice. But because I’m using for a base layer I’m keeping. Material is really nice and soft. The blue color is really pretty. Haven’t actually put it to the test yet but think I’ll like the performance.

Susan (Lithia Springs, US)
Love this shirt and the Mykonos color - only wish it didn't have the thumbholes

Loving the Mykonos color. I really like the weight and fabric of the shirt. It's a blend, but it's still acting like merino in my experience. I used to be a purist - 100% merino only, but I've come over to the blend side for the better feel, easier maintenance, and I think they're less interesting to moths.
Personally, I wish this was more of a long sleeve crew. That's how I want to wear it, so the thumbholes only detract.
Note that this shirt is snugger than some others. After reading reviews, I bought a M and it's perfect. I wear a S in the SS nuyarn shirts.


Gave as gift and she’s wearing it right now!

Karen S. (Longmont, US)
I miss the 100% merino.

Nuyarn is creeping up to 18% polyester in some of these garments. Polyester has the nasty habit of collecting and holding on to body oder/stains. I find myself washing this more often than my full wool. I have made efforts to rid my closet of polyester…I know what it does to the environment each wash. Consider 100% natural fibers.

We are looking at adding more 100% merino products to go with our current Short Sleeve offerings.

These specific Tech Baselayer Pants are 90% Merino and 10% Nylon to help with durability.