The signal mirror is essential for outdoor survival activities. Adrusy Survival Signal Mirror is made of quality acrylic material, sturdy and durable, with strong toughness and better reflective effect. The multi-function signal mirror is equipped with a survival whistle to call for help in an emergency. It has the functions of long-distance communication in the field, sending reflected survival mirror signals, aiming, and can also be used as a mirror. Can be hung on the zipper of the backpack or key chain. Adrusy Survival Signal Mirrors are great for hiking, camping, climbing, fishing, hunting, etc.