Always warm, breathable and wind resistant, worn as a midlayer or standalone - the Atom Heavyweight Hoodie is one of theirmost versatile insulation pieces. Its Coreloft synthetic insulation is efficient, effective and resilient. Mapped for optimal performance, it works well even if wet. The lightweight, wind resistant and water repellant Tyono 30 shell is treated for extra durability, and Permeair panels under the arms add ventilation. The insulated, helmet compatible hood adds warmth and protection.