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

I liked it so much I did a second purchase and going to do a third. It is very easy to cut. I sew so have rotary cutter which is amazingly easy to get professional cuts. One of the reviews stated it rips easily. Did they use it outdoors instead of indoors? We use it indoors and it works great. Easy to fit and tape with just painters tape. One word of warning though, while painters tape easily removes from most surfaces, it does not remove from this reflective foam. It will tear. Love the reflective light and decrease of heat loss. I even used it on cold walls wit cutting drafts and warmer rooms. We have home extension with lots of windows which are great to look out, but cold in winter even with low e glass. Very happy with this product. Great for interior windows or walls.

My apartment gets very hot in the summer from direct sunlight, and this has been a huge help. It blocks out the sun completely and keeps the space much cooler, so I don’t need to run my AC as much. The insulation is thick, high quality, and seals well with no odor. The Velcro adhesive on the window can sometimes melt in high heat, but extras are included and easy to replace. Just be gentle when peeling the Velcro from both the sheet and the window to avoid moving the piece stuck to the window.

Easy to use and really helps keep the temperature down. I purchased this to use in my RV trailer. I used the window screens as a template. I outlined it with a marker then using a pair of scissors I cut it a little oversized to fit the glass. I placed the cut out between the glass and the screen. Worked out great. The only time I used the Velcro that is supplied, is when I covered the ceiling vents. This Velcro has some good adhesive so make sure you put it in the right spot.

Works exactly as intended and was plenty to cover most of the windows I needed covered. Was easy to install and stayed put once I used the correct amount of stickers.

Used this to temporarily block an old fireplace opening. Worked well. Really cut down on the draft from the opening.

Does the job. Quality is good and easy to use. Definitely keeps the heat/cold out

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.

After putting this on the backside of my trailer windows not only I love the privacy but also love the coolness I feel when I sit on my couch near those windows, I'm pleased 😊👍

This is not thick enough, so if you are using to block light as well as insulate, get something thicker.

Love this stuff. Our bedroom in west facing and above an all brick garage. The sun pouring in, even with blackout curtains caused our bedroom to heat up. This thermal barrier reduced heat by 90%. Easy to cut to size and comes with handy velcro stickers

Use it in my camper van for the windows. Works really well to block out heat or keep heat in when it's colder.

It is folded not rolled, which is not ideal. No size on the package, so I will have to see how big it is when I get it opened at our trailer.

The product was not what it showed. It came in a bunch of chunks and some of them had cuts in them. Worst product ever and false advertising