Dc fix self-adhesive mirror-effect privacy film is designed to provide one-way privacy to windows, wherever the light is greater. When fitted to the interior side of external glazing, you will be able to see out, but no one will see in during daylight hours.This vinyl also offers a high level of heat protection (95%) but a low level of light transmission (5%). It will also block 99% of UV rays which can cause damage to furniture & soft furnishings.The box includes the film, cutter, squeegee and full instructions. The application is quick and easy, apply to smooth flat glass surfaces, simply spray the glass with plenty of water, remove the clear backing film before applying to the glass, smooth into position removing any excess water, by pushing out to the sides. If you make a mistake peel back and start again. The second protective backing film can be removed once the vinyl is in place. Leave to dry.The vinyl film can be removed, simply peel away from one corner. It comes away cleanly, leaving no residue behind. The film can be re-used using the water to re-apply. Wipe clean using regular household cleaners.