They're back. I don't know why though. I have yet to see one agent use them. Furthermore, I have yet to see one agent enforce the carry-on restrictions. When the bag sizers were first rolled out, there was a memo stating that agents would be using them, and that an agent would be posted at the security checkpoints to redirect pax with too many or oversized carry-ons. I would like to know whose idea this was, and how much money they wasted on those sizers.