A container for dropping from an aerial vehicle in flight, the container comprising: an upper wall, a lower wall, and a plurality of side walls; and a plurality of air brakes (8, 14), wherein each air brake comprises a flat panel, the plurality of air brakes comprising: a plurality of side air brakes, wherein each side air brake comprises a longitudinal panel and is connected to a corresponding side wall at or near an upper edge thereof, and wherein each side air brake is 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, and in which a cross-section of the side air brake at right angles to a central longitudinal line of the side air brake extends horizontally when the container is in an upright position, whereby the side air brakes, in their deployed position, are configured to not rotate the container around a vertical axis during the dropping, and to keep the container in the upright orientation, characterized in that each side air brake is freely pivotable around the side air brake pivot axis, and that the plurality of air brakes further comprises: a top air brake 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 when the container is in upright position and is having a horizontal velocity during dropping around a horizontal axis of the container for pivoting the side air brakes from the passive position thereof to the deployed position thereof by air flowing between the side air brake and the corresponding side wall. an upper wall, a lower wall, and a plurality of side walls; and a plurality of air brakes (8, 14), wherein each air brake comprises a flat panel, the plurality of air brakes comprising: a plurality of side air brakes, wherein each side air brake comprises a longitudinal panel and is connected to a corresponding side wall at or near an upper edge thereof, and wherein each side air brake is 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, and in which a cross-section of the side air brake at right angles to a central longitudinal line of the side air brake extends horizontally when the container is in an upright position, whereby the side air brakes, in their deployed position, are configured to not rotate the container around a vertical axis during the dropping, and to keep the container in the upright orientation, characterized in that each side air brake is freely pivotable around the side air brake pivot axis, and that the plurality of air brakes further comprises: a top air brake 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 when the container is in upright position and is having a horizontal velocity during dropping around a horizontal axis of the container for pivoting the side air brakes from the passive position thereof to the deployed position thereof by air flowing between the side air brake and the corresponding side wall. a plurality of side air brakes, wherein each side air brake comprises a longitudinal panel and is connected to a corresponding side wall at or near an upper edge thereof, and wherein each side air brake is 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, and in which a cross-section of the side air brake at right angles to a central longitudinal line of the side air brake extends horizontally when the container is in an upright position, whereby the side air brakes, in their deployed position, are configured to not rotate the container around a vertical axis during the dropping, and to keep the container in the upright orientation, characterized in that each side air brake is freely pivotable around the side air brake pivot axis, and that the plurality of air brakes further comprises: a top air brake 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 when the container is in upright position and is having a horizontal velocity during dropping around a horizontal axis of the container for pivoting the side air brakes from the passive position thereof to the deployed position thereof by air flowing between the side air brake and the corresponding side wall.