3M BS car window films are manufactured from colored polyester. The Black Shade-film stops up to 43% of the heat from the sun and over 99% of UV-rays. This Sun protection film has a scratch-resistant coating.
3M provides the film with a 1,5 year product warranty, which covers discoloring, changes in the color, and the bubbling of the film.
For professional and quality-conscious do-it-yourself -window tinters.
3M is the oldest Sun protection film -manufacturer in the world. It got a patent for its film in 1966.