Equipment standards in various sports are typically defined by governing bodies or associations that establish guidelines for performance, safety, and fairness. These standards include specifications for size, weight, and materials used in equipment, ensuring consistency in competitions. For example, in tennis, the International Tennis Federation regulates racket dimensions and string tensions. In team sports, like football, the size and weight of balls are standardized as well. Adherence to these guidelines is crucial to maintaining integrity and ensuring all competitors have a level playing field.