Whistles can be used in sports (professional, schools, clubs, events, parties, backyard games), in calling for help in emergency situation, or as a warning for danger. Professions such as police officers, sports referees, lifeguards, campers, hikers are likely to use them but toy whistles are also a popular loot bag item. Some kids' umbrellas has a whistle attached at the handle.
| Color | Silver. |
