These ordinary looking sun glasses have a unique feature...you can see behind you. The Spy Glasses have a special coating that allows you to look straight ahead and still see what is going on behind you. UV400 coating. Choose from two different styles. An Athlete with Eyes in the Back of his Head – Spy Glasses Makes this Possible. A great item to have if you jog,walk or go to the maul, if someone is following you you can see them and it is sometimes fun to have. Teachers have been told they have eyes in the back of their head, it could be they have spy glasses.

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SPYGL-1

SPYGL-2