What Our Gearhead® Experts Are Saying:"This tee does it all—it’s featherlight, dries fast, and doesn’t smell after long runs or travel days. The merino blend keeps me cool even when I’m sweating hard, and the slim fit works well under other layers."For warm-weather pursuits or high-output movement, the Capilene® Cool Merino Blend Shirt keeps us cool, dry, and fresh. Patagonia blends temperature-regulating merino wool with recycled polyester to create an ultralight fabric that wicks moisture, resists odor, and offers all-day next-to-skin comfort. The slim fit wears clean on its own or layers easily under a midlayer or shell when temps cool off. Built with Responsible Wool Standard-certified merino and sewn in a Fair Trade Certified™ factory, this tee is a sustainable choice for daily training, extended travel, or multi-sport adventures. Side vents and a drop-tail hem boost breathability and comfort in motion, while the woven logo adds a subtle Patagonia finish.