Abstract: A portable safe suitable for use by a traveler to secure valuables in a hotel or motel room. The safe includes top, bottom, side and end members hinged together to allow the safe to be opened to a substantially flat configuration for easy placement within luggage. When the traveler reaches his hotel or motel room, he raises the side and end members and fastens them in position with pins. The top member includes a lock for securing the top member in a closed position. Vacuum devices attached to the bottom member are actuable to secure the safe to any smooth flat surface such as a piece of furniture, a wall, a floor, a mirror, or a window.