Wool for summer? Yes, Merino wool for summer! Is it the lightest wool shirt in the world? The TREW Weightless NuYarn Merino T-Shirt still features TREW’s NuYarn Merino blend but is even lighter and more breathable. We put it through the test to see if it was as impressive as the hype. I love the TREW Gear NuYarn Lightweight pocket … Continue reading TREW Weightless NuYarn Merino Shirt Review