I loved the way that the top of this box locked together and kept itself closed. It would be a good package for carrying things as the heavier the object its carrying, the more secure the interlocking sides are at the top. I thought the way that the top panels are double layered is interesting as it adds so much to the strength of the box, however, it looks very untidy and confusing when open, so it may be beneficial to consider glueing the two flaps together.