What bothers me is something that the films fast and strong static electricity to build up, then stick to each other and tighten any lint or dust grain. But that can hardly prevent this type of film.
To protect the front and back sheets, you have to insert it exactly, otherwise you can easily get dirty back. By engaging way they are but the front is well protected in any case.
By crystal-clear film can forward all read well.
The price is quite high, but you get a good product, which finds frequent use in my work and everyday life, and I can recommend