I have to tell you about the blackout shades I have for the whole front of the bus as well as the two windows on the rear door.
I had someone make them for me. They are two layer. It is black vinyl inside and the outside layer is a thick white fabric that is a sun blocker.
They snap on. In the photos of the steps, you will see them on and you will see them off. Much the same with the windshield.
When not in use, they fold up and are stored on a shelf. Very compact.