Summer temperatures are pleasant, but not eternal. When the temperature drops, the Atom Gilet is here to protect you. It is so compact and light that there is no reason to leave it at home. Effective, lightweight and compressible Coreloft™ insulation is strategically placed across the chest and back. Tyono™ 20 fabric balances airflow with wind resistance and has a DWR finish to repel moisture. Stretch fleece side panels promote ventilation, while the non-insulated hood, stowable when not needed, adds protection.