Abstract: The present invention provides a novel foldable softwalled cooler for preventing temperature change of heated or cooled items placed therein. The structure generally includes flexible walls having an insulating material therein and a bottom connected to the walls forming a cavity between the walls and the bottom. The inside surface of the walls and the bottom are covered by a water resistant material that is heat sealed at seams so as to prevent leakage at the seams. A panel is provided within the cavity and is likewise covered in a water resistant material. The water resistant material of the panel is heat sealed at the area of connection to the water resistant material of the walls and bottom at a position between the front wall and the bottom.