MontBlanc Wallets. SKU: 198843. Color: Cypus Blue. Size: 3.54 0.39 4.33 inches. MontBlanc Extreme 3.0 Motif Leather Wallet. This wallet, crafted from embossed full-grain leather adorned with the distinct Extreme 3.0 motif, features six credit card slots and dedicated pockets for cash and receipts. A ring on the back allows for attachment to a hook or neck strap. Material: Cowhide, Lining: Fabric.