Montblanc Men's Belt Bag. SKU: 123940. Barcode: 4017941952363. Color: Black. Montblanc Extreme 2.0 Black Leather Belt Bag. Crafted from leather, this belt bag features a front zip pocket, front logo accent, two-way top zip closure, and detachable and adjustable strap. Dimensions: 9.4"W x 6.3"H x 2.6"D