Large backpacks offer more capacity than standard daypacks and suit travel, longer outdoor days or bulkier equipment. As volume increases, the carry system, empty weight and external dimensions become more important.
How large should a large backpack be?
The right size depends on the trip: for short travel, efficient organisation matters; outdoors, load distribution matters as well. If you fly, compare the actual external dimensions with your airline’s cabin-luggage rules.
What should you look for in the carry system?
Wide shoulder straps, a stable back panel and, with heavier loads, a chest or hip strap can distribute weight better. A laptop compartment is useful if the pack also serves work or rail travel.
Large backpack or travel bag?
A backpack keeps both hands free and carries weight close to the body. Travel bags and duffels are often quicker to pack and access when the luggage is carried only short distances.