The Men's Patagonia R1 Air Jacket is a technical fleece for cool-weather pursuits. This versatile jacket can be worn on the mountain, in the city, as a standalone, or layered up. It's light, breathable, and adds just enough warmth to cut the chill while you're pushing your limits in the climb or taking on a day around town. It packs easily and allows for airflow when the temps are constantly changing, thanks to the zigzag-knit pattern.