pvc card bags: 1>Used for all kinds of school card,work card,ID card and ... so on. 2>Simple and strong. 3>Any color and size pvc card bags ... and manufacturing all kinds of bags,including packing bag, gift bags, candy bags, tool bags,shopping bags, office bags and so on.Our ... ,carry more conveniently3>Can hold on many kinds of card,such as student card,work card,bus ...