Montblanc Mens Briefcase. SKU: 199403. Color: Cassis. Size: L 14.57 X H 11.02 X W 2.36. Montblanc Extreme 3.0 Thin Document Case. Made from embossed calf leather with the signature Extreme 3.0 pattern, this briefcase is both stylish and functional. It features an adjustable and detachable leather shoulder strap for easy carrying, along with dedicated compartments for A4 documents. Inside, youll find a zipped pocket, two loops for writing instruments, and plenty of space to hold a wallet, tablet, pens, and other daily essentials.