This TOPS Emergency Signal Mirror is ideal for neck carry (ball chain not included), stowing in wallet or bug-out bag. It's an American-made, hard chrome finished metal mirror with two highly reflective faces. Comes with a Rubber Silencer just like the Troops wear. The Emergency Signal Mirror is the perfect accessory and great insurance for all outdoor activities. Measures 2.15" x 1.00" and weighs 0.4 oz.