You close this duffle bag with a zipper. The material of choice for this bag is polyester and it has a volume of 42 litres.
From The North Face
The North Face Base Camp Voyager Duffel 42l Tnf Black-tnf White One Size
The product is available from £103.44 at international stores.
JD Sports
The North Face Base Camp Voyager Duffel 42L - Black - One Size