Abstract: A device is disclosed for transporting bulk materials in a shipping vehicle having walls one of which defines a door opening and doors attached thereto. The device includes a flexible liner having sides adjacent the walls of the vehicle, and stretchable connectors supporting the liner from the tops of the walls or if the vehicle has a roof from the roof of the vehicle. The side of the liner adjacent the door opening has at least two apertures in the upper portion, one being an entry opening and one a vent opening, and at least one aperture in the lower portion being a discharge opening.