The rescue whistle, thanks to its unique design, generates a loud sound even with a gentle blow. Made of durable polypropylene. A very important advantage of the rescue whistle is that it doesn't sink. In a crisis situation, even with a lack of strength, you can call for help with a signal. The clip, which is an integral part of the whistle, can be attached to a pocket or backpack strap. You can also hang the whistle around your neck using the cable that comes with the kit.