Review on Coavas One Way Window Film: Sun Blocking 23.6 x 78.7 Inches Non-Adhesive Window Tint for Heat Control, Glare Reduction, and UV Protection - Perfect for Home and Office, Removable and Static Cling, Black by Carla Gallegos

I have bought this product 3 times as I apply it slowly to windows that get full afternoon sun. In winter it doesn't bother me but in summer in the middle of the Atlantic heat it bothers me and the bad air conditioning that can't handle it! I applied myself after reading the instructions and watching YouTube videos without too much trouble. The ones I've already applied still look good and almost all the bubbles I couldn't get rid of are gone. I noticed a temperature drop of a few degrees in these rooms. This was especially great on my front door window which was lit with full light/heat and sloshed down to hit the thermostat directly. My only issues with this product at the moment are that I wish they made big rolls (1 roll per window and my windows are no bigger than average) and the fact that they put tape on the rolls that marks on the Film leaves You must cut it off as waste immediately. **EDIT** As of May 2021 I have deducted 1 star due to fading of the foil on my upstairs windows which are exposed to the full afternoon sun. They look like ordinary discs without a tint again, although the film remains. Needs to be replaced.@** Edit 2**@ Changed brand name and roll size. I ordered again and received smaller buns than before. Too small to close the window in one piece! Wasted time and money. No options for other sizes. Beware.