Montblanc Backpack. SKU: 130246. Color: Grey. Size: 300 130 410 mm. Montblanc Extreme 3.0 Buckle Leather Backpack. This backpack offers ample space for all your day-to-day essentials, featuring a bold carbon-fibre motif print that makes a statement. The external pocket is secured with the M LOCK 4810 buckle and a zipper closure, while two adjustable shoulder straps, internal pockets, and space for your computer and up to two writing instruments ensure functionality. The design also includes a recycled fibre lining and luxurious leather crafted using a CO2-neutral tanning process. Material: Cowhide, Lining: Recycled fabric.