1.Material: stainless steel referee, coach whistle, durable & permanent; smooth surface, comfortable touch.
2.Comes with a black lanyard, easy to carry, or only wear it around your neck.
3.Adjusting the length of lanyard by a small flexible bead; cork pea makes it easy to blow a loud.
4.Suitable for referee, coach, lifeguard, training, self-defense, school sports, competition, emergency, or anyone who needs a safety whistle.