The Arc'teryx Atom Hoody M combines advanced insulation technology with a lightweight, breathable design, making it ideal for active outdoor pursuits in cold conditions. Its Coreloft synthetic insulation offers reliable warmth even when damp, while the compact fit and articulated patterning ensure unrestricted movement. With durable water-repellent fabric and strategically placed stretch panels, this hoody delivers both weather resistance and ventilation where needed. Perfect as a mid-layer or standalone piece, it provides technical performance for demanding alpine and backcountry environments.