The shrill sound of a whistle can carry a long distance. That’s what makes a whistle great for locating people who are lost. Add to your average-everyday whistle the components on this survival aid, and you've got a fantastic item for your camping and emergency needs. Each aid contains: waterproof match box, liquid filled luminous dial compass, shrill signal whistle, signal mirror and lightweight plastic case with lanyard. Take peace and comfort as you hike your way through lifes adventure.