Sunglasses on a brim?

We've all seen those magnifiers that attaches to the brim of the hat. Here's a new twitch to the theme: sunglasses that clips to the brim. I saw these at an on-line fly shop that's located in Luxembourg.

My favorite magnifier for old eyes is the Flex Spex. These flexible arms clips to the side of the hat and can be moved out of the way when you don't need them. I've used them on my last trip for the first time and it works like a charm.