HEAT Control and ENERGY Saving - As heat control window film, it can keep cool and reduce glare in summer, retain heat in winter. Our one way window film can reject 80% of solar rays, helping reduce expensive cooling costs, easy to install and remove. UV Blcoking Protection - Reflective window film effectively blocks out 79% of infrared rays and 80% of UV rays, reducing fading, aging of interior furnishings and preventing sunburn. 29% of Visible Light Transmission helps reduce glare from harsh light. This window glass coverings is of 0.19mm thick to have excellent thermal insulation effect, and anti-scratch layer on the surface. Daytime Privacy Protection One way window film provides mirror privacy only during daytime, the outside glass shows mirror effect. Attention: The mirror effect of the window film will be reversed when the inside light is stronger than outdoor, such as at night, the inside glass shows mirror effect and the inside can be seen from outside. Static Cling and Envirement Protection - As window tint for home and office, glue free design, non-adhesive, easily removable and reusable, no chemical release. Just remember to spray a lot of water to both the adhesive side and window before installing to make the one way mirror window film and glass fit perfectly. Roll Size: The window film is 44cm x 200cm. House window tint suitable for home and office.