Montblanc Business Bag 4810 Westside Document Case Large 116376. The new 4810 Westside combines a pure design with functionality: in calfskin leather with Montblanc's iconic print and shiny gunmetal hardware finishing the large document case provides smart interior organisation for DIN/A4 documents, a laptop and other technical devices. In addition, a front pocket with zip offers quick access to essentials, such as travel tickets, documents and keys. Comfortable leather handles, an adjustable and detachable branded black shoulder strap and a satellite system to attach the bag to a trolley give the document case multiple carry options.