These duffel bags are specially designed by our seamstresses for large American flag storage and returning flags for repair. Compared to a cardboard box, these military grade duffel bags, with handles, are easy to pack and carry large American flags. When not in use, they are easier to store than a cardboard box and they can be reused many times. Strong zippers also make them easy to use, compared to a box, and you won't have to go find the tape dispenser!