Wanted for my new laptop again a glance protector and I ended up with this product. Absolutely substandard goods! It is not really about a kind of "blackout foil" to a view protector, as I the last product (whose name I unfortunately do not remember ...) it was usual. At an angle of 30 ° should normally watch on a black screen. That's not the case here. The screen is only darker. My recommendation: Stay away!