The most common plastic card size or plastic card dimensions is CR80 defined as 3.370 inches (85.6mm) wide and 2.125 inches (54mm) high. Based on it STAR TREND also offers the combo cards to accomplish one loyalty card made up of a master card plus sub cards.
Most plastic cards are made according to the standard ISO7810 (physical properties), ISO7811 (magnetic stripe card) and ISO7816 (chip card) of the bank card. The common card shape is a rectangle with rounded corners. The size is CR-80 (3.375 x 2.125 inches) and the thickness is about 0.76 mm (30mil). With the increasing use of plastic cards, more and more cards have customized sizes and shapes such as larger sizes for name badges to carry more information and easy to read; and smaller sizes for loyalty cards of the grocery store or membership card of the GYM clipped on the key ring, etc.