A brightly colored ball disappears and reappears in your bare hands. Place the ball in your hand and close your fingers. Open your hand - the ball is gone. Or vanish by tossing it into the air. Drop the Poof Ball into a clear drinking glass. The ball instantly and visibly changes colors. Looks great. Rub the Poof Ball on the side of a clear plastic bag, and it goes right through. A spectator finds the ball sealed inside. Complete with instructional video.