Opening method: ZipperCapacity: 20-35LApplicable gender: NeutralBag internal structure: Mobile phone bag/Document bag/Sandwich zipper bag/Computer Pocket/Camera pocketBag size: MediumMaterial: PolyesterWith or without rain cover: NoneHardness: MediumLining texture: NylonStrap root number: Double rootSize: Length: 28cm, Width: 18cm, Height: 46cm