The term “duffel bag” isn’t English, it actually originates from the town named “Duffel” in Belgium. Duffel is a thick and durable cloth that was used to make these bags which was originally manufactured in this town during the early 17th century. Over time, the bags made from this fabric became popular due to their strength and versatility, leading to the adoption of the name "duffel bag" for this type of travel bag.