A classic tool for camping, backpacking, and emergency preparedness, the lightweight UST StarFlash Floating Signal Mirror has a built-in precision aiming system for accurate signaling, and it won't sink if dropped in water. In addition to using it for emergency signaling, it's handy for personal grooming as well. The virtually unbreakable Floating Mirror also features a lanyard hole for convenient attachment to gear, and it works even in overcast conditions or at night with moonlight or other light sources.