The Wūru® Men’s Everyday Merino Wool Zip-Up , Made in the USA. Style where you want it – Technical where you need it. We searched globally for a merino wool fabric that stood above all others, that’s where we found Nuyarn® - 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. Nuyarn is not ringspun or Corespun yarn, it’s Nuyarn.