Large travel bag that can be carried by hand, shoulder strap or concealable backpack straps. The Doppelduffel Adventure Bag is a unique travel bag that can be carried by hand, by shoulder strap (in 2 orientations), or by it's concealable ergonomic backpack straps. Multiple pockets, pouches, and compartments offer plenty of space and organization, and the main interior is equipped with 2 padded dividers for splitting the main compartment into smaller sections.