Experience the superior breathability of Patagonia's merino technical top, meticulously crafted to naturally regulate your temperature and combat odor during strenuous activities in diverse conditions. Fashioned from a blend of 65% RWS-certified merino wool and 35% recycled polyester, it embodies Patagonia's commitment to sustainability. The virgin wool sourced by Patagonia is certified to the Responsible Wool Standard (RWS), ensuring the welfare of the animals and the land they graze. Made in a Fair Trade Certified factory.  Soft, comfortable, next-to-skin blended fabric wicks moisture, dries fast, naturally regulates your temperature and resists odor Set-in sleeves for enhanced movement and fit Side vents for improved fit while you're on the move; a slight drop tail stays in place All of the virgin wool Patagonia sources is certified to the Responsible Wool Standard (RWS) from farm to fiber to help ensure protection both for the animals that supply it and the land they graze Back-nec