Sleeves From One's Vest Meaning

(idiomatic) Something non-existent; something of no value or cost.

Example: 1980, Alvin W. Cohn, Benjamin Ward, Improving Management in Criminal Justice, page 79
  "when a prosecutor dismisses some of the charges in a multi-count indictment, he is giving the defendant the sleeves from his vest"
2003, Ronald Reagan, Kiron K. Skinner, Annelise Graebner Anderson, Martin Anderson, Reagan: A Life in Letters, page xii
  "Mr. President," I said, "We don't have anything to deploy so you are giving them the sleeves from your vest.
2006, Richard Sonnenfeldt, Witness to Nuremberg: The Chief American Interpreter at the War Crimes Trials, page 170
  Of someone stingy he would say, "This guy wouldn't give you the sleeves from his vest."