Abstract: Shipping container of the type which can be stacked with a bottom part and a top part. Cooperative mating means is carried by the top and bottom parts whereby the top part is releasably secured to the bottom part to form an enclosure within the top and bottom parts. Cooperative stacking means is carried by the top part and the bottom part which are adapted to mate with containers of the same type so that the containers may be stacked with the top part of one of the containers engaging the bottom part of another container thereby inhibiting substantial lateral and longitudinal movement of the containers with respect to each other. The cooperative stacking means includes a plurality of spaced parallel rows of recesses extending in one direction in the outer surface of one of the parts. Protrusions are formed on the outer surface of the other part and have a shape so that they are adapted to fit within the recesses.