The Patagonia Nano Puff Jacket is a top choice for alpine climbers and backcountry trekkers, offering unparalleled warmth and functionality. Featuring advanced PrimaLoft Gold Eco Insulation and a windproof, water-resistant recycled polyester ripstop shell, this jacket is perfect for belay duty and quick-hit ski tours. Designed with a sculpted fit and narrow horizontal quilting on shaped side panels, it ensures both warmth and mobility. The soft, wicking interior storm flap and zipper garage enhance chin comfort, while the internal zippered chest pocket doubles as a stuff sack for easy packing. Whether you're navigating rugged terrain on foot, skis, or a split board, the Nano Puff Jacket delivers reliable performance and convenience in a compact, easily stowed package. Patagonia Nano Puff Jacket Features: Lightweight 100% Recycled Polyester Ripstop Shell DWR (Durable Water Repellent) Finish 60g Primaloft Gold Insulation Eco 55% Post-Consumer Recycled Content Brick Quilting Pattern with Horizontal Quilt Lines on Side Panels Centre Front Zipper with Wicking Interior Storm Flap Chin Guard Two Zippered Handwarmer Pockets Zippered Internal Chest Pocket Doubles as a Stuff Sack Drawcord Adjustable Drop-Tail Hem Seals in Warmth Weight Approx 337g