SmartSHIELD -3mm 16"x50ft Reflective Insulation roll, Foam Core Radiant Barrier, Thermal Insulation Shield - Engineered Foil/White Film

Just gotta get some double sided tape or something to make it stick to the window. I have a sliding glass back door that gets hit by the sun and heat! This truly helps block out the heat and supporting my hovering blinds to block it out! Size I got was good, I had to do 2 strips for the window in the door to cover. But it’s defly enough with it to cut to fit!

I live in an HOA and needed a white backing so I wouldn’t get fined. Even with the white side to the windows it helped cool the west facing, upstairs section of the house tremendously. (**We’re in Texas with no shade and MONTHS of humid 100+ degree temperatures so this was a big deal!) I love that it’s foam and not bubble wrap first of all. Second it’s so easy to work with compared to the bubble wrap option. The foam is easy to cut with a utility knife/razor, scissors were cumbersome but will work too. We used packing tape to attach to the window frame. After a month of use I am definitely happy with the product.

There keep the garage cooler in the summer and warmer in the winter

The item was easy to handle and install. It just didn't have the effect I was hoping for. It is installed on some large windows in an addition. It definitely darkens the room, and the white-silver color lets me put white on the outside. It looks much nicer than the silver would have.

The product seems OK enough but the width is a bit short and I have found this to be with other brands as well. I measured (twice) that the width was 15 and 3/4 inches wide. Easy to cut. The foil side does conduct electricity per my testing of resistance with my volt-ohm meter, so be careful installing it around electrical connections.