I purchased these to place on the windows beside my work space / study room - I have full ceiling to floor windows in that room. Never bothered me until I have to work from home often now compared to before. Installing these allowed me to open my curtains and be able to see what's outside and I'd still have my privacy during the day, and it seemed to help with the cooling of my room too. Installation was a little tricky at first, the strip is too big/wide for my window, so I made a few mistakes in cutting it to the size I need. But after installation, my windows look great! The film stays in place.