Our X-Ray Specs Lenses are the world's funniest practical joke! They are just like the ones you remember from childhood-for over forty years these mesmerizing specs have amazed millions all over the world. With this famous, blushingly funny illusion, see the bones in your hand or start a riot at the office pretending you can see through clothing. Look at any bright point of light such as city streetlights, holiday lights, or candles and see the words "X-Ray" magically appears. Take X-Ray Specs to parties, get-togethers, and hospitals. X-Ray Specs are a great novelty item and ice-breaker for doctors, dentists, radiologists, stockbrokers, detectives and security personnel. Not made out of plastic.