Perman Slim Pocket Creative Aluminum Business Credit Card Holder Metal Box Cover Wallet (Blue) Material: Aluminum Alloys. Size (L*W*H): 9.3cm x 5.7cm x 0.7cm/ 3.66"x2.24"x0.27"(approx). Modern Aluminum Alloys Pocket Business Card Holder. Holds approximately 14 business cards. (depending on the thickness of your business card). Fits comfortably in your pocket, purse or bag. Light weight and slim design, convenient to carry. Can be used to hold business card, credit card, coins and other small things.