Breathable and warm, the Proton Hoody is the choice for climbing and dynamic mountain activities in cold conditions. The 100% recycled Coreloft™ Compact insulation is light and packable and performs even if wet. The outer is a durable, air-permeable Fortius Air 20 softshell. Working together, the breathable materials allow airflow that speeds vapour transfer and regulates temperature. An insulated StormHood extends coverage, and the articulated design is patterned to move. What's been updated: A PFAS-free durable water repellent treatment and Coreloft™ Compact synthetic insulation for lightweight, breathable warmth. Need a heavier option? Try the Proton Heavyweight Hoody .