Swim officials, also known as judges, are responsible for making sure that competitions are fair and safe. They wear a variety of clothing depending on the level of competition and the organization hosting the event. For example, at an Olympic trials event, officials would be expected to wear a business suit. However, at a local swim meet, it is more common to see officials wearing khaki pants and a polo shirt with the logo of the swim meet.
No matter what they are wearing, all officials must have their credentials visible at all times. This usually takes the form of a badge or lanyard that clearly displays their name and position within the organization. Officials also carry stopwatches and other tools to help them do their job effectively.