The Stem backpack is distinguished by its interior features and exterior functions. Inside, it offers two zippered pockets, a key hook, an RFID-protected pocket, and space for A4-sized documents. Additionally, there is a special laptop sleeve in the backpack that accommodates laptops up to 15.6 inches in size. On the outside, the backpack has a zippered front pocket for storing smaller items. Two open side pockets provide space for bottles or similar items. The main compartment of the backpack can be securely closed with a zipper to keep the contents safe. Furthermore, there are two attachment hooks for bicycles, allowing the backpack to be securely fastened to the bike while riding. Particularly practical is the back panel cover, which can be easily tucked away. This allows the backpack to also be used as a messenger bag or shoulder bag without the back panel getting in the way. The straps of the backpack are adjustable to ensure an optimal fit to the body and enhance carrying comfort. The Stem backpack features a modern design and is suitable for everyday use as well as for outings or travel.