Reflective Insulation Foam,48" x 10 Ft Window Insulation for Winter,Aluminum Foil Bubble Insulation Roll for Keep Heat,Window Insulation Kit for RV, Thermal Insulation Cover for Window.

Upon removing the product from the large, soft-padded shipping envelope, I noted that it was folded and not in a roll as shown in the listing. Laying the product flat and letting it relax will make most of the folds go away. It is very easy to work with and can be easily cut or trimmed with a sharp knife or scissors. (for those reading this that might be under 10 years old, go ask your mama before using sharp objects... and never, ever run with scissors.) Where was I at? Oh, yeah... There will be a notable reduction in heat when this material is trimmed and fitted for windows. As a bonus, due to the materials used in it's construction, it keeps light out too so, for the day sleepers, it's a dream come true! Generous size (4' X 10') allows for just about any window sizes. It comes with a lot of Velcro sticky pads as well to complete installation(s). Nice buy at a very reasonable cost. Recommended to all!

Stops heat from coming through window. During the hot summer days, this product kept a room comfortable. It's very easy to install. I have a west facing large bay window and it has always been beastly hot in the summer. I purchased this product and immediately the room was comfortable to be in. I don't know how many degrees it reduced the heat but it felt like a 15 degree drop in temperature at least. I put it up on the window during the hottest time of the day. Then when the sun is low, I pull lightly and it drops gently to the floor. It's a light plastic product so there are no sharp edges.

This worked perfectly for my camper windows to keep out the heat from the sun while camping. The roll covered 8 windows and two skylights. (4 large and 2 small and 2x tea small) The Velcro’s dots made installation super easy. Will defintely buy again.

The material was much thinner than what I purchased at Lowe’s. The installation was easy and the Velcro circles were helpful in installation. The insulating value is less than expected but you get what you pay for.

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!

Purchase item for every and works well. Easy to cut the perfect size needed.

Works but...came folded and not rolled like you'd purchase in the store. Without measuring difference, this foil is a little thinner than I've used in the past on a roll. We cut it for each trailer window and finished off the edges with foil tape. Tip for RVer's, we found attaching a small paper binder clip under several window frame screws made an excellent mounting point to hold the foil in place without movement.

Great window insulation for my RV. Just cut to size. Really cuts down of the heat.