Backpack

Abstract

The backpack comprises two shoulder straps that can be covered and fastened at the back and a trolley handle with trolley wheels; the trolley wheels can be covered with a protective shield that can be pulled out at the bottom on the back; the backpack can be opened using a lid; the trolley handle can be pulled out in two stages; a folding shelf with shelves is built into the backpack; the top shelf can be locked with the first pull-out stage of the trolley handle so that the folding shelf can be expanded vertically over the shelves and compressed again to close the backpack with the lid.

Images