An Impossible Escape

Effect: A handkerchief escapes from a sealed tumbler.

Secret: A coloured handkerchief is placed in a tumbler. It has a fine thread attached to one corner which hangs over the outside of the glass. A second handkerchief is placed on top of the first. Another handkerchief is placed over the glass and secured with an elastic band. Reach under the handkerchief covering the glass and pull the secret thread, pulling the coloured handkerchief from the glass into your hand. Pull it into full view then remove the elastic band and covering handkerchief to prove that the coloured handkerchief really did escape.