A duffel bag, duffle bag, kit bag or gym tote is a big cylindrical bag made of cloth (or alternative fabric), historically using a top closed.
The title comes from Duffel, a city in Flanders, Belgium, where the thick fabric used to generate the bag originated in the 17th century. According to the Oxford English Dictionary, the term dates back to 1677, used to explain coarse woolen fabric having a thick rest or frieze. More recently, a duffel bag generally refers to the specific style of bag, although the phrase may also be used to refer to any big generic holdall or a bag made of thick fabric.
It's often used as luggage or to carry sports equipment by those who travel in the outdoors. Duffel bags or apparel bags are also frequently employed by army employees; when utilized by sailors or even marines they are sometimes referred to as seabags.