EVTSCANAnti-Tracking Rear View Sunglasses Anti-spy Mirror Glasses for Behind Vision Outdoor Cycling Beach Fashion Sunglasses

Nice to use while walking.

There are two caveats:1) The sunglasses are a little smaller than the typical sunglasses. They just barely cover the outside of my eyes.2) The sunglasses sit on the nose is a slightly downward angle. This is not a problem when looking forward; but when looking in the rear, the view is slightly pointed upwards. This easily compensated by tilting the head slightly upwards.Even with these 2 caveats, the sunglasses are still functional. They shield my eyes from the sun, and the rear view is very clear without distortions. I use the sunglasses when I ride my bicycle, and they are great for seeing what's behind me; although sometimes I have to turn my head slightly to get a better rear view. The case is a plus feature. It's padded on the inside, and the outside is a hard plastic; so when not in use, the sunglasses are well protected.

These glasses are pretty cool. I use them when I’m out town to watch my surroundings. Don’t wear while driving. A car coming up on your sides looks like they are coming from your side to hit you

However not ideal of biking or running as it can get distracting. If the glasses were bigger, potentially this would be less of an issue.

Amazingly you can use as regular sunglasses but, off to the right and left, you can see behind you, not like in a mirror but with clarity of shape and size so if someone were to examine these glasses this feature would not stand out to the unknowing

very good product for the price paid.I can see behind very clearly.A bit strange when you first wear them, as it seem as the manufacturer mounted the lens inside out