These spy glasses look like an ordinary pair of designer sun glasses. Yet they have a unique feature, they let you see who is behind you. The lenses on these spy glasses have a special coating that allows you to look straight ahead and still see what is going on behind you. Stylish and great for walking and biking. You will not need to turn your head so often. It will be like you have a rear view mirror with you. Have you ever thought you were being followed? Now, no one can sneak up behind you.

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