Understand what I'm talking about?

It's got elastic around it, a skirt that hangs down on your neck to protect the ears and neck from the sun. It can be taken off one cap and put on another.

I have a skirted cap that I wear, but man that thing gets funky after a while. I figured if I had one of these skirts I could just move it to a fresh cap. That and the skirted cap it not that comfy, I like my normal caps, but would really like to have one or three of these skirts.

I've seen them somewhere before, but dang if I can find them online now.