Q-Bag BigBags are specially designed with inner panels. These inner panels are stitched to fasten the side edges of the BIgBag together, allowing the BigBag to stand in the shape of a cube. Even after the BigBag is filled, the shape of the cube does not change. In addition, these inner panels prevent the BigBag from swelling from the sides when filled. There are symmetrical cavities (holes) in the middle of the inner panels. These cavities ensure that the filled material is spread evenly throughout the BigBag. Thus, the material that fills everywhere, including the BigBag corners, is scattered.