Heat control and UV protection: self-adhesive window film blocks 99% of UV rays and 85% of IR rays. Reflective window film prevents heat from entering a room in summer and escaping in winter. Window film mirror film provides gentle light, ensures a pleasant feeling on the skin and protects the interior from premature fading.Window film privacy protection: The opaque window film on one side allows you to see from a darker place to a brighter place. Window film is transparent from the inside and opaque from the outside, which can effectively block daytime visibility. When the indoor light is brighter than the outdoor light, the mirror effect will be reversed, so please be careful to protect your privacy at night.Easy to Install: You just need to apply lots of soapy water on the window and the back of the film (the side with glue). Then use a scraper to remove the air from the bubbles. And you will receive a window film for sun protection and a window film for privacy. Remember to remove the transparent protective film before use.Wide application: Window film privacy film can be applied to any flat, clean, and smooth glass surface at home, office, bedroom, living room, classroom, and anywhere where you want to protect your privacy and reduce sun glare.