The Men's Patagonia R1 Thermal Jacket is a slim-fit technical layer designed for performance in cold mountain environments, featuring a smooth, durable outer fabric that sheds light snow and wind, while a soft microgrid fleece backing effectively wicks moisture for lasting comfort. Made with breathable, stretchy Technostretch fabric, it ensures unrestricted mobility during dynamic movement. A full center-front zip with a soft kissing-welt zipper garage at the chin provides customizable ventilation or warmth. The jacket includes one zippered chest pocket for small essentials and two low-bulk, zippered handwarmer pockets that lie flat under a harness or pack waistbelt. Cleanly finished, low-profile cuffs stretch easily to accommodate active use, whether climbing or cooking at camp.