The Submarine Backpack rollover M is made of washed cowhide with a slightly shiny surface and a rich feel. The spacious zippered main compartment is flexible in height thanks to the rolled-up closure. It offers a padded laptop compartment, making it the ideal mobile companion for work or leisure. The side zippered compartments (front and back) are especially handy when on the go, worn as a backpack. However, the bag can also be used as a messenger bag. For this purpose, the "backpack carrying strap" is converted by simple handles to the courier bag carrying strap.