A hockey card is a type of trading card typically printed on some sort of card stock, featuring one or more ice hockey players or other hockey-related editorial and are typically found in countries such as Canada, the United States, Finland and Sweden where hockey is a popular sport and there are professional leagues. The obverse side normally features an image of the subject with identifying information such as name and team. The reverse can feature statistics, biographical information, or as many early cards did, advertising. There is no fixed size or shape of hockey cards, running the gamut from rectangular to circular, however modern North American cards have typically standardized on a 2.5 by 3.5 inch (6.35 cm by 8.89 cm) rectangular format.