Jacket from Satisfy. Pertex Diamond Fuse Windbreaker is designed for light rain, strong winds, and damp miles, functioning as a protective outer layer that packs down easily when not in use. Made from Pertex® Diamond Fuse – a durable, water-repellent, and quick-drying nylon fabric with a diamond structure that enhances strength without compromising on lightweight feel or breathability. Rippy™ Ripstop panels under the arms provide natural ventilation.