The Celsius Aia Heat Jacket is a technological marvel designed for the coldest days in the field. Crafted from durable polyester with light padding and 4-way stretch fleece side panels, it offers unparalleled freedom of movement and excellent wind protection. The jacket boasts three heat panels with customisable warmth settings, controlled via a chest button with colour indicators. With zipped side pockets, an inside chest pocket featuring temperature guidance, and a heat-storing silver-film lining, this jacket combines practicality with advanced thermal technology to keep you comfortable in the harshest conditions.