Fulfills its. Purpose but the room becomes darker! If it is darker outside than inside you can still see in :) for those who don't know!
Difficult to apply if you've never done this before. As the film effectively sticks to the glass at some point, I couldn't get several air bubbles out. It's also not easy to cut cleanly with a normal cutter and ruler. The film lets in very little light, we now almost have to switch the light on during the day. I will soon replace it with a curtain.
Good