Montblanc Business Bag Meisterstuck Ultra Slim Document Case 118287. The MeisterstŸck ultra slim Document Case is crafted in black leather with the Montblanc deep shine leather. As part of the MeisterstŸck collection, this luxury black bag stands in the long tradition of products crafted with quality leather and the Montblanc emblem with palladium coated ring. With its ultra slim size, it suits the young customer who takes only the essentials with him and prefers a clean, classic look.