The Patagonia Women's R1 Air Half Zip Neck Fleece is a technical midlayer designed to move fast, breathe hard, and disappear under layers when needed. Its lightweight, slim-fit design makes it ideal for aerobic missions in cool conditions, while the jacquard fleece construction keeps air flowing and moisture off your skin. With a quarter-zip front for quick venting and a strategically placed pocket that stays out of the way under a harness, this fleece is a minimalist's dream. Whether you're trail running before sunrise or powering through alpine climbs, the R1 Air keeps you dry and ready. Made with 100% recycled materials, it also reflects Patagonia's deep commitment to sustainability and fairness