The flag of Guinea-Bissau consists of three horizontal stripes of equal sizes. The top and bottom stripes are colored yellow (#FCD116), while the middle stripe is colored green (#007A29). In the center of the flag, there is a black five-pointed star that is positioned slightly to the left side. The aspect ratio of the flag is 1:2 (height to width ratio), and it has a rectangular shape. The dimensions of the flag are not specified in the official description.