Sen. Bernie Sanders says the Democratic convention will be a "contested" convention because Hillary Clinton can't get to the 2.383 delegate total without super-delegates.
His view is that the super-delegates from the states he won should align with him, and not Clinton.
However, the rules for super-delegates is that they are not bound by any metric when it comes down to who they vote for at the convention. Hillary Clinton currently has 2,165 delegates (including super-delegates). Sanders has 1,357 (including super-delegates).
I'm not sure why Sanders believes Clinton's supers would jump ship when she's winning both the delegate count and the popular vote.