Professional boxers are always aiming for the top - the title of champion. Champion is used to signify the top boxer in a given weight class. However, because boxing is not unified under a single governing body like other sports, there can be more than one champion for a weight class. This is why you often hear about multiple boxers being the "World Champion." A champion is usually given a belt with the name of the sanctioning body and other unique traits to weight class and organization.