UST JetScream Floating Whistle, 122dB, Yellow Marine Jetstream whistle Won't rust like traditional whistles Water-buoyant 122db whistle can be heard over most natural and man made noises Pea-less, this whistle will never rust or freeze up and it floats Compact design fits comfortably in your pocket Short lanyard allows you to hook it to your backpack, wrist, keychain, purse, anywhere it is easily accessible Made in the USA