Montblanc Sartorial Ultra Slim Black Document Case 128541. The Montblanc Sartorial Collection speaks the language of modern elegance. Made from Saffiano leather print, this ultra slim document case in black measures only 4cm wide and can be used as a laptop case with the advantage of handles and a shoulder strap for easy carrying. The case has two additional front open pockets proven practical for tickets and small items that require quick and convenient access.