Finding the perfect bag can be a game-changer when it comes to travel. Bags on the market today vary from enormous hard-shell checked luggage to tiny foldable tote bags that can fit in the palm of your hand. One of the most versatile travel bags is the always reliable duffel bag.Duffel bags (also spelled “duffle” – and I am going to be switching between the two on a dime, so keep up), come in all shapes in sizes. You can find duffels perfect for a weekend trip or big enough to accompany you on a backpacking trip through Europe. A traditional duffel bag usually features a main compartment with a zippered pocket on either end, a removable shoulder strap, and two smaller hand-carry straps.