3-in-1 design with removable daypack: use standard backpack, daypack or combine the two for the ultimate travel solution Center zip fully opens for ease of packing multiple compartments and includes interior compression straps Tuck-away backpack straps and zip-away trolley handle for easy convertibility from a backpack to a wheeled bag Fleece-lined pocket for phone / sunglasses Luggage pass-through strap fits over most upright luggage handles Structured foam straps and back panel for ultimate comfort Adjustable sternum strap