A beanie with built-in goggles who's crazy idea was that?
This is a traditional cotton ribbed beanie with goggles sandwiched into the brim possibly used by skiers.
I think the idea is more of a fashion thing than of practical use.
Although it does work has a pair of goggles, the beanie brim when folded down holds the goggles in the right place and steady enough to protect the eyes from the bright sunlight.
That said you end up looking like some cheap superhero called Insect Man.