This is the first bookmark to show the planets of our solar system truly three-dimensionally: The planets seems to be within easy reach. Watch the borderline between reality and picture disappear, as you experience this fascinating effect on a perfectly flat display: This product is just 1 millimetre thick, thanks to the patented True-3D technology. A great keepsake, or alternatively an equally impressive bookmark. This product is not embossed, it is perfectly level. You cannot feel the shape of the relief. The three-dimensional impression is solely achieved by means of a special printing process. Thus you do not need the otherwise usual red-green glasses, either.