It's a bird, it's a plane - its The BÉIS Expandable Duffle - here to save you from all your winter travel woes, with its airy light material and superman like capabilities to transform into a larger silhouette with a simple ZIP! From work, to the gym, to your weekend overnighter, even when you overpack, just zip, zip ,zip for an extra 3 inches of space. This bag sure does pack a punch while remaining light-as-air ensuring no unnecessary weight is added. It's like you asked for the perfect duffle and, POUFF, out of thin air, we delivered.