Material:Glass，metal<br />Color:As shown<br />Dimension:Approx.15cm*5cm(L*W) <br />Includes Stylish and lightweight Carry Case<br />'The lenses on the spy glasses have a special coating that allows you to look straight ahead and still see what is going on behind you. <br />It is stylish and great for walk and biking.You won’t need to turn your head to see if a car is coming. <br />Both side view design，it will be like you have a rear view mirror with you. <br />Designed for anti-tracking<br />Breaking all the rules of tracking<br />No need to turn around to see who is following you<br />protection against ultraviolet rays<br />Protect yourself from the stalkers<br />Great way to keep your distance and seek assistance<br />Don\'t have to sneak up behind the suspects anymore， walk ahead of them