The filter sheet is used on both sides - one side is matte, the other shiny.
So you have either a glossy display or an anti-reflective - which I think is good.
I personally prefer the anti-glare (matte) at work.
There are 2 ways to fix the foil with transparent Kunstoffstreifen on display shrouds or adhesive pads.
I prefer the strip, then you can easily remove the foil if necessary and use the notebook back to normal.
It is very accurate fit cut and well made. From some small recess for the finger is criticized, which is very helpful in removing actually - the film fits really perfect in the display frame and can be otherwise difficult to access - from me, therefore, no criticism for it.
Due to the principle swallows the light sheet. The horizontal viewing angle could be even closer, so only 4 out of 5 stars.
The part is not cheap, but for people who do not like prying eyes on the screen - for example, in meetings or in public - will appreciate the film. The best turn down as far as possible, the brightness - then the effect is strongest and the neighbor sees nothing.
It does not prevent curious glances over their shoulders - the vertical effect is virtually zero.