Sunsweet are currently running a promotion for their Pitted Prunes in Malaysia. Grab a carton of this fruit and a high end storage container is offered shrink wrapped to the base as an on-pack promo. Quite a popular GWP product…
The storage container seems to be almost the same size as the normal container (normal container already looks sturdy enough). This negates the immediate need for such a container for the Sunsweet Prunes.
The brand could have slightly changed the gift so that the Sunsweet pack would fit inside to save on shipping costs by fitting more products in each container. That said, increasing your visibility on shelves is also a marketing ploy as seen on countless other promos such as this one by Guinness. See also other promo products for fruit.
Big picture of this gift below.