What is a "duffle bag"?

A duffle bag is a large cylindrical bag, typically made of canvas or nylon, with a drawstring closure at the top and often also equipped with a shoulder strap for carrying. Originally used by sailors to carry their personal belongings on board ships, duffle bags are now commonly used for travel, sports, and outdoor activities due to their durability and spaciousness. They come in various sizes, with some designed to fit in overhead compartments on airplanes and others large enough to hold several days' worth of clothing and gear. Some duffle bags also have additional pockets or compartments for better organization of items.