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 27 reviews
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.

Cindy (Fort Collins, US)

Great quality. My lower rating is because I was looking for a wool top I could wear alone. These are more form fitting showing every bump and require another garment over the top to look nice. Quality was great though.

Hi Cindy,
The Tech Line is designed to be a tight next to skin layer. If you're looking for something for daily wear, our standard Long Sleeve is a more forgiving fit.


Ann F. (Baldwin, US)
Love it

Great color (Mykonos) and perfect weight

Deb S. (Lee, US)
Wuru is amazing!

I love the shirt that I got from Wuru - especially the thumbholes! I have had great experiences with the company including a mixup in size and color, which was fixed quickly. I recommend their products and appreciate their customer service!

Karen H. (Fryeburg, US)
Kept me very warm

Wore this on our first cold day and I was was toasty warm. I usually get cold first and for a change my husband got cold first. Waiting for more stock to come in the Mens and I will buy him one.