<p><b>HEIMDALL Safety & Survival whistle</b></p><p>Made from high impact plastic, with double frequency, it’s easy to emits a shrill, high-pitched sound, without having to strain to blow. With built-in clip and lanyard, it’s convenient to attach</p><p>to clothing, school backpacks, bag, pocket, water gear or equipment for quick access. Great basic whistles to have as part of a go-bag or emergency kit, for camping, boating, hiking, </p><p>biking, general survival all outdoor activities when you need to sound-off. Please do yourself a favor and buy a set of these to share with your friends. Hope we never need to use them in </p><p>an emergency, but handy to keep it with your survival kit. </p><p><b>A small price to maybe save a life! </b></p>