There are a lot of good reasons that you might want these mirrored rear view sunglasses. Maybe you think you are being tailed, or maybe you are in a bad neighborhood. These sunglasses would also be great for detectives, allowing them to keep an eye on their subject while ahead of them. They won’t expect that.
No one is going to sneak up on you when you wear these. Plus they are super cheap. They only cost $3.50(USD)from Amazon. This is a simple and effective spy gadget that will keep you in tune with your surroundings.
Always know what’s behind you. Just keep an eye ahead of you too, so you don’t walk into a pole or something.
[via This Is Why I’m broke]