VanEssential Insulated Magnetic Blackout Window Cover Designed for Mercedes-Benz NCV3 & VS30 Sliding Door with Bare Metal Frame ONLY (Van Years 2007 to Current Year) - Charcoal Gray

You know that reflective stuff they put on the windshields? Use that on windows on the outside. They sell some that are fabric windows covering with layers of insulation. They work really really well and help a lot. Direct sunlight from windows is your biggest enemy. I have the same issue with one side of my RV facing south and my sleeping side facing east. I went with the VanEssentials brand. They make them for sprinter vans but you can get some that fit your windows. Link below: https://a.co/d/0eoAEg8e