Lightest, most packable Atom Hoody for big efforts in cold, wet conditions.   Atom Versatile synthetic insulated mid layers with a high degree of weather resistance. Superlight Superlight materials and design, emphasizing lightweight and packability over durability. Synthetic Insulation Man-made insulation with quick dry times, durability and retains warmth when damp. Fair Trade Certified™ Produced in a Fair Trade Certified facility. Building worker well-being into our product DNA.   Description Lighter than the original, the Atom SL Hoody is one of the most useful (and packable) pieces you can own. Wear it as a standalone layer when trail runs take you through cold, wet weather or layer it with a waterproof shell when mountain pursuits demand additional warmth and mobility. Breathable and weather-resistant, it has stretch insulation in the body but not the sleeves or hood — maximizing packability while still delivering focused warmth to your core. What's been updated: Updated with recycled Fortius™ Air 20 fabric, recycled stretch synthetic insulation, and FC0 DWR finish for improved mobility and a lower footprint. New Octa® Fleece side panels give enhanced breathability and less micro shedding. The StormHood™ is now lined and no longer stowable. The Bird logo is embroidered for long lasting visual.   Features & Specs Technical features Moisture-resistant outer face fabric Breathable Lightweight Compressible and packable Durable Wind resistant Ultralight Construction Fortius™ Air 20 nylon liner is lightweight, breathable, and made with recycled content Stretch synthetic insulation is breathable, warm, and light, adds freedom of movement, and is made with recycled content Lightweight stretch Octa® Fleece side panels provide freedom of movement and improve ventilation Cuff & Sleeves configuration Uninsulated, mesh lined sleeves give light protection and regulate temperature Design & Fit Fitted, with articulated patterning for mobility and comfort Garment Centre Back Length: Size M is 29"/72cm - Varies by size Fabric treatment FC0 DWR (Durable Water Repellent) finish repels moisture and is PFAS-free Hem configuration Adjustable hem draw...