Abstract: A 3D storage bag includes opposing flexible plastic front and back panels, the two opposite lateral sides of each of the flexible plastic front and back panels each having a first segment and second and third segments respectively extended from the top and bottom ends of the first segment, the first segments of the two opposite lateral sides of the flexible plastic front and back panels being respectively sealed together, a flexible plastic top panel bonded to the flexible plastic back panel and the second segments of the two opposite lateral sides of the flexible plastic front and back panels and defining with the flexible plastic front panel an opening, a flexible plastic bottom panel bonded to the bottom sides of the flexible plastic front and back panels and the third segments of their two opposite lateral sides of the flexible plastic front and back panels, and a fastening tape for closing/opening the opening.