The Ultimate Survival Technologies Star Flash Micro Mirror is the ultimate super small emergency mirror. It features a retroreflective targeting star for precise signalling and it is effective even on overcast days. Made of 100% lexan polycarbonate with vacuum disposition metalization reflective surface you will struggle to break it. It also floats so you won't lose it in water and it has a hole to attach a lanyard of you wish. Bring it with you on off-the-beaten track adventures to be sure to be found in an emergency.