sackbread by werryson wijaya from indonesia

The origin of sandwich
When it was first invented, sandwich is made for busy people who have very little time to eat. The complete nutrition that is contained in a person daily meal is packed inside a sandwich.

Advanced difficulties
As time goes by, another difficulties in consuming sandwich is found. The stacked bread and its filling are "lubricated" by the dressings inside (mustard, tomato ketchup,chili sauce,etc.).This condition leads to the sliding of the sandwich fillings outwards the bread.

Instead of offering an easier way to eat at work, sandwich has create another problem, such as staining the desk or even the paper works.

Sackbread
Sackbread is a bread specially designed to make a sandwich. It is inspired by the form of a sack/ pocket which is able to keep things inside of it.
This character is applied to a conventional bread with certain pattern of cutting and folding, forming a-sack-like form of bread, which is able to keep the fillings inside the bread.

As an addition to its consumer-friendly product, it is also an environment friendly product. Using sackbread means lesser food stain. This leads to not only lesser paper/napkins, but also lesser water necessarily used to clean the hands.
When applied to a sandwich shop, Sackbread is believed to be able to cut the shop's expense on both napkins and water usage, which has always been quite an amount of money for a consuming place.