racing jacket vented

OCP Racing Jacket Polished White / Metallic Red Jaws / Red Accents Frames are pretty clean overall, there are a couple small blems on the jaws and the left bolt has a mark - all have been highlighted in photos. Both lenses have hairline type marks, they're primarily on the bottom edge area. I...

I have a pair of Racing Jacket vented Jade iridium lens, with Matte White frame. I notice there is a set of clear lens that come in the travel case. Are these really lenses? i.e. sunglasses or just clear plastic? What is the purpose of these? There appears also to be a cord? Regards