Montblanc Mens Backpack. SKU: 199845. Color: Black. Size: 12.6 x 6.7 x 18.1. Montblanc Extreme 3.0 Large Leather Backpack. Crafted from embossed full-grain bovine leather with the unique Extreme 3.0 motif, it exudes distinctive style, complemented by sleek black metal fittings. Ideal for young urban explorers who lead dynamic lives, this backpack features a padded compartment for laptops up to 15 inches, multiple pockets, and two loops for writing instruments. Material: Leather.