The Montblanc Extreme 3.0 card holder features 6 credit card slots and an additional open pocket. The embossed black full-grain bovine leather with the Montblanc Extreme 3.0 motif lends an unmistakable style, as well as the black metal fittings. Thanks to a D-ring, you can attach the card holder to a hook or to a neck strap to have all your needs at hand. Neck strap sold separately. The leather is produced with CO2 neutral tanning process, which is achieved through the offsetting of CO2 emissions generated by this process, while the lining is made out of recycled fabric. All these choices aim at reducing the environmental footprint of this product compared to traditional materials and processes.