Sunvisor / Cap mount
[A-SUNVIMNT]

The idea of this product is actually really good. The problem with it is the clip system to hold it in the hat. There is no spring or whatsoever, and the interval to fit the cap is too big, which makes it not to hold tight, especially for an hat with a thin cap. This makes the product unusable because it doesn't fix. A system with some kind of spring would need to exist.