An interlocking or mating container and container system are presented herein. In particular, the system includes a plurality of adjacently disposed (side-by-side, end-to-end and stacked) containers that are dimensioned to maximize the available space on a pallet or in a shipping unit. The containers are configured to include a plurality of interlocking or mating portions such as one or more side flanges, teeth or projections, a handle engaging portion or channel, one or more wheel assembly receiving portions, or one or more foot receiving portions. The Interlocking or mating portions are configured to matingly engage or abut corresponding portions of an adjacent container and at least partially restrict movement there between.