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 with slight drop tail 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-neck yoke with hanger loop. Woven P-6 logo at left hem. Made in a Fair Trade Certified™ factory, which means the people who made this product earned a premium for their labor. Features Performance Fabric Built for Mobility Vents and Drop-Tail Hem RWS-Certified Wool Loop for Hanging P-6 Logo Made in a Fair Trade Certified™ factory, Made in Sri Lanka. 139 g (4.9 oz) Materials 3.5-oz 65% RWS-certified merino wool/35% recycled polyester jersey 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 Fabric is certified as bluesign® approved Made in a Fair Trade Certified™ factory Care InstructionsMachine Wash Cold Gentle Cycle, Do Not Bleach, Dry Flat, Do Not Iron Size & Fit Model is 185 cm (6'1") wearing a size medium.Slim fit Patagonia, M's Long-Sleeved Capilene® Cool Merino Shirt