A true space saver. Easy to fold the backpack to a small pocket(a sandwich size). Simply unfold from your checked bags and use it as a carry on for your excess baggage.

DIMENSIONS: Fold: 9x8.5x2.2 inches Unfold: 20x13x7.5 inches

Carry-on size by American Airlines for your reference( HxWxD) : 22x14x9 inches