The Patagonia Nano Puff Jacket is a lightweight, high-performance insulated jacket designed for versatile cold-weather use. Constructed with 60-g PrimaLoft® Gold Insulation Eco—100% recycled polyester—it delivers exceptional warmth-to-weight ratio and retains insulating power even when wet. The jacket features a distinctive quilted box-baffle construction for consistent loft and minimal cold spots, a full-length YKK two-way zipper with storm flap, and a stand-up collar for enhanced neck protection. It includes two zippered handwarmer pockets and an internal zippered chest pocket for secure storage. The exterior shell is made from 100% recycled polyester with a DWR (durable water repellent) finish, offering wind resistance and light moisture shedding. Elasticized cuffs and hem provide a snug fit to seal in warmth. The iconic Patagonia P-6 logo patch appears on the left chest, and a tan woven brand tag hangs from the collar. Ideal for layering under shells or wearing as a standalone midlayer during fall/winter hikes, urban commuting, or casual outdoor activities. Its packable design allows compression into its own pocket for easy storage. The sleek gray colorway offers modern, minimalist styling suitable for streetwear and technical apparel enthusiasts alike.