A container for dropping from an aerial vehicle in flight comprises an upper wall, a lower wall, a plurality of side walls, and a plurality of air brakes comprising flat panels. A plurality of side air brakes, wherein each side air brake is connected to a corresponding side wall at or near an upper edge thereof, is freely pivotable around a side air brake pivot axis at or near the upper edge of the corresponding side wall from a passive position, in which the side air brake extends substantially parallel to the corresponding side wall, to a deployed position, in which the side air brake extends substantially transversely relative to the corresponding side wall, by air flowing between the side air brake and the corresponding side wall. A top air brake is connected, with one edge thereof, to the upper wall or one of the side walls, and configured to extend substantially transversely from the upper wall to tilt the container during dropping around a horizontal axis for pivoting the side air brakes from the passive position thereof to the deployed position thereof.