Expanding up to 50% of its initial size and good for up to 2 days worth of travel, this amazingly functional 14-21L travel pack carries like a backpack, can be held like a briefcase, and can also be packed like luggage. Durable and water resistant, this super bag has 18 compartments, including a TSA-ready 16" laptop sleeve, RFID safe and dedicated tech storage, and a vertical luggage pass through to voyage with ease.