Room Blackout Reflective Window Film Mirror Treatment: 100% Light Blocking Static Cling Tint for Privacy, Home Security, Insulation - Anti UV Static Cling Window Film(19.68" x 78.74") (p9) 100% Light Blocking: leaving your room dark as dark during the daytime - darker than the curtains! Perfect window film mirror. Suitable for daytime sleep or baby care :sleep perfectly whenever and wherever,which can anti uv effectively Easy to remove:can be easily applied or removed from any smooth surface without leaving traces of residue Thickness and high qualityoThe glass film has excellent heat insulation effect, the surface has scratch-resistant layer, anti-friction, no fading, no blistering, easy to disassemble, and economical and practical. Protect privacy: There are different privacy effects between day and night. The one-way window film provides great privacy and the exterior glass shows a mirror effect. As the outside light becomes weaker, the mirror effect of the outer glass will gradually disappear, and people can see the inside. When the internal light is stronger than the outside, the mirror effect will be reversed. Remember to draw curtains at night.