The Patagonia R1 Air Jacket is built for those who thrive in cool conditions and keep moving through it all. This slim-fit technical fleece offers a rare balance of warmth and breathability, perfect for alpine approaches, trail runs, or brisk shoulder-season adventures. Its zigzag-knit pattern helps trap heat without trapping moisture, making it a powerhouse of airflow and mobility. Whether layered under a shell or worn on its own, the lightweight design and recycled materials make it a responsible and functional choice. Patagonia continues to push technical innovation with a clean aesthetic and sustainable build that performs wherever you roam | Patagonia Men's R1 Air Jacket