Review on Coavas Blackout Window Film No Glue 100% Light Blocking For Day Sleep, Privacy Static Cling For Home Security And Aquarium, Frosted Black 35.6 X 118 Inches by Aavon Dark

Goes up easy, works great. I like that there are grid lines to help with measuring and cutting. I recommend cutting it a bit big so the edges of the vinyl run over the edges of the window to keep the light from bending around it. Overlaps nicely for a wider window. Seems to help thermally, too. I noticed the cold wasn't coming through the window as much as soon as I put up the vinyl. Works way better than plain black paper. It is actually blackout vinyl. I just put it up, do I don't know how well it stays up over time, but so far I am very happy.