The JetScream whistle is a powerful signaling device that can easily be heard above most natural and man-made noises. Its ear-piercing 122dB shriek makes it one of the loudest whistles of its kind. Made out of plastic instead of mental so it will not rust like traditional whistles. Pea-less construction allows for all weather use and will not clog or freeze. Compact, flat design is just over two inches in length. Durable ABS plastic is waterproof and floats. Offered in high-visibility orange to find easily if dropped.