In an era of so many man-made wonder fabrics, why stick with wool? Because it’s Nature’s performance fabric – and Merino wool from Australia is the cream of the crop. Widely regarded as among the world’s finest, silkiest, soft-as-a-lamb fibers, Australian Merino wool is 100% itch-free not to mention inherently breathable, wicking and temperature regulating (which is why you’ve never seen a sheep sweat or shiver). The lightweight 4.57-oz. knit in our Merino Wool Base Layer Shirt even fights odor, so you won’t offend after days far from civilization. And it’s comfortably stretchy, won’t sag out of shape, because we’ve blended in 4% resilient elastane. Exactly what you need when the weather’s wild and woolly.