Hindsight's Rear View Mirror Sunglasses

POC are bringing to market a new version of their rear view mirror sunglasses. They essentially have mirrors molded into the outside edge of the glasses, allowing you to look over your shoulder when cycling. Nick Clark has given these a little test around town but is not really sure how much it adds to his riding experience. Jack O'Brien says that while being able to see behind you while it can be useful does sort of breed an feeling that everything is a threat.