Abstract: A display box for protectively packaging contents is disclosed. When the display box is in the closed position, the contents are retained by at least one depression or aperture in the forward wall of at least one right triangular prism that comprises the display box. When in the open position, the display box is self-supporting, has several surfaces for displaying information or decoration, and is designed to be displayed with the contents. Each of the right triangular prisms is hingedly fastened at its back edges to at least one adjacent right triangular prism so that all of the right triangular prisms are fastened in series and are moveable between a first open position and a second closed position. In the first open position, the back planar surfaces of the right triangular prisms are co-planar. In the second closed position, the vertex edge of each right triangular prism lies along a central vertical longitudinal axis of the display box.