The Slim Howler Rescue Whistle can sound the alarm for rescuers to come and find you while lost or stranded. The signaling whistle has a 100 decibel sound that is audible from over 1 mile away. Its dual-frequency sound can cut through surrounding noise, allowing you to be heard when it matters most. The pealess design is great for all conditions and seasons; it’ll work in the freezing cold without jamming or sticking to your lips. It is made from a durable ABS plastic that is unbreakable and still lightweight. It’ll easily fit into a pocket, pack, or around your neck while hiking or any other outdoor activity. This pack comes with 2 whistles. Emergencies can come as a surprise, so be prepared and ready for the worst with a Slim Rescue Howler Whistle.