Coaches and Referees Metal Whistles with Lanyard. Extra Loud Whistles Great for All Sports Including Football, Swimming, Soccer and for Lifeguards. Long Lasting and Will Operate Even When Wet. Ideal for Practice As Well. USE: Great for all Sports During Competition or Practice FUNCTION: Loud and designed to alert and diffuse LIGHTWEIGHT: Easy to carry and works everytime USE as a primary or backup whistle BONUS: Will Work When Wet