Bubble Reflective Insulation Roll To Window For Winter, Double Side Aluminum Foil Keep Heat,59"X 99" Thermal Shield,Rv Insulation.

Great easy to use some of the Velcro stickies don’t stick but they give plenty to help with that. Keeps heat from leaving through the windows, so works well and Velcro makes is easy to take on and off.

Works great

I’ve used this product several times! I’m a shift worker, so keeping my bedroom cool and dark so that I can sleep at night is really important. This insulation helps to do just that! This is the second roll that I’ve purchased, but only because I moved and my windows are different measurements! It’s very durable and weighs next to nothing. I just put my curtains up in front of it and you don’t even know it’s there besides being able to sleep comfortably! We’ve put in in our camper windows as well!

I have very old, large dual-pane windows that are inefficient. Adding these to the panes helps keep the heat and sunlight out during summer, making the room much cooler and reducing the need for the air conditioner.

Update: Upon checking, my old ones are from the same company. Which means their quality went waaaay down since 2023! It doesn't have full coverage, its see through pretty badly. I use it to cover the Arizona sun in my RV windows. And I have some from a different company and those have full coverage you cannot see through them the light. These are cheap and you can definitely see the light through and it doesn't keep the heat out as much as some better quality ones.