Keeps out the sun. I have a window that is a half moon above my regular window in my bedroom. Hard window to block out summer heat. This worked perfectly

Very hard to get bubbles out and hard to just put on cutting to size. This a temporary solution for us for we lost a pool cage with privacy screen during hurricane. It will take a while to get it rebuilt and our dogs were barking all the time. We put halfway up patio doors to block their view. It works great can't see out or in at all.

My neighbor has a giant motion activated spotlight that shines in my bedroom window at all hours of the night. I have blinds in the windows, and I didn't want to put up curtains. I thought I would try this. I cleaned the window really well with glass cleaner and then again with a microfiber cloth and alcohol. I started at the top of the window and used a squeegee to put it up. It has been a couple of weeks and it is still up. Also it doesn't look ugly from the outside. The material is a quality