Waning daylight and suspect weather have you climbing fast, but you’re still two long pitches from topping out. Fortunately, inside this warm, intrinsically soft crew, every situation feels like it must have a silver lining. We make all our Merino Air® baselayers from a blend of Merino wool sourced from the grasslands of Patagonia (51%) and 100% recycled polyester (49%). We spin the wool fibers with an innovative technology that creates a loftier yarn with a superior warmth-to-weight ratio. The lofted wool and recycled polyester yarns are then knit directly into a seamless garment. The result is a baselayer with superior performance qualities; it offers a stretchy, chafe-free fit, lightweight warmth, exceptional breathability and the natural odor-fighting properties of wool.