Graphene down jacket, black and gold color matching down jacket. Graphene is called "black gold" and is the king of new materials. Graphene is the strongest and thinnest material in nature. Graphene is black, but it can absorb all colors in visible light. The insulation layer has the functions of heating, heat preservation and energy storage. So the black gold down jacket refers to the graphene down jacket; Black and gold down jackets also refer to down jackets with black and gold colors. This color matching down jacket looks simple and generous, and has been liked by many people.