Zip up when your run gets colder with the Patagonia Women's R1 Air Zip-Neck. Featuring a soft, quick-drying fleece fabric, this half-zip long sleeve keeps you warm and dry. The fabric is a polyester jacquard fleece designed with hollow-core yarns stitched into a unique zigzag texture, providing breathability. Off shoulder seams provide comfort when wearing packs, while an internal pocket on the left side stashes small essentials