Alert others to your location when you need assistance or to avoid collisions with this Safety Whistle from Shoreline Marine. It's made of tough ABS plastic in a pea less design which prevents it from rattling when moved. A bright color increases visibility for easy visual location and the lanyard allows for wearing around the neck and keeping within reach at all times. This pea less whistle also meets audible signaling requirements of the United States Coast Guard. It's useful not only aboard ship but also when traveling in the wilderness on camping or hunting trips.