Motorhome wheel covers

Recently I saw a picture of a motorhome with screen type wheel shades. They snapped on the side of the vehicle and shielded the tires from the sun. They appeared to be made of something similiar to the pull down roller sun shades. They looked to be much easier to use than. The strap on slip over type most of us use. Anybody know of such and where to get?

I could probably get some material and fabricate myself, but being lazy, would prefer to buy ready made.