Boarding a crowded train, walking cobblestone streets, trekking the hills—wherever you roam, Travel Backpacks will be right there with you.  These convertible backpacks have suspension systems and convert to a hand-held bag. Backpack straps can be hidden behind a panel for airline travel. Most also feature a removable daypack for short excursions.  Travelers who want to be highly mobile and plan on carrying all their gear love them.  Travel backpacks which can be carried on your back or rolled must be lightweight, tough enough for demanding adventures and should be sized properly for the length of trip planned.