Was so excited to use this product but I was disappointed in how it looks on the window. First, it didn't come with any instructions so thank goodness for youtube tutorials. I also bought an application kit with the solution and squeegee as you'll need that to install. Cutting it was easy and application was a bit tricky so start on a seldom used window to get the hang of it (two people is best but one person can do it). I give this 3 stars because my windows now look hazy instead of clear and you can see scratch lines from using the squeegee even though the squeegee was designed for window tinting. In all I did 8 windows on my 2nd story and had planned to use downstairs as well. But the haziness turned me off using it again but we rarely go upstairs so I'll just leave it in place to use to cut down on the intense sun coming in the windows. I hope this helps cut our energy bill as we've been in a brutal heat wave.