The duffel bag is a piece of oblong luggage typically carried over the shoulder and used for short trips ... and made of a woven cloth later known as canvas, duffel luggage has since evolved ...

Choose a durable, water-resistant material like nylon, neoprene, or canvas. Each of these ... stuff (i.e. using your gym bag as a work bag, too), then a roomy duffel is what the doctor ordered.