 The current paper version is sold under the name "X-Ray Spex"; a similar product is sold under the name "X-Ray Gogs".X-Ray Specs consist of an outsized pair of glasses with plastic frames and white cardboard "lenses" printed with concentric red circles, and emblazoned with the legend "X-RAY VISION".The "lenses" consist of two layers of cardboard with a small hole about a quarter-inch (6 millimeters) in diameter punched through both layers.