The Black Rubber with Diamond Cut Lines Silver Tone Business Card Case by Colibri keeps your business cards secure in a case that opens a window on infinite opportunities. The silver toned case gleams with high polish. A layer of black rubber on the upper surface is diamond cut into a pattern of windowpanes, allowing the underlying luster to show through. This highlights the resilient black rubber by contrast. The dimensions of the card case are 4 by 2 3/4 by 1/4 inches, giving a capacity of 15 to 20 business cards. The case weighs 2.5 oz. This unusual design will turn heads as you cement new contacts.