The Mertra Heat Reactive Puffer (Coal) brings an elevated winter aesthetic with cutting-edge heat-sensitive technology that shifts color when exposed to touch and warmth. Designed with a durable polyester shell and polyurethane coating, it provides strong resistance against cold and harsh outdoor elements. The down-cotton filling ensures maximum insulation, creating a warm, cushioned feel in freezing temperatures. High-frequency 3D logos on the chest and back add a sleek, technical design finish. Adjustable toggles on the hood and waist deliver a tailored, protective fit, while the wrist velcro closures help seal in warmth. A secure interior zip pocket completes this functional yet bold cold-weather essential
