This Review Title is Great product for only some people and the content is: These are so much fun to play with, they just don't fit my eyes. And there is no way to trim them. There are 3 tiny magnets on them that make them work, two on opposite sides and one in the middle. You can't trim them or it would mess them up. The liner is really black and easy to use. Might just use it for the liner..There are other information for this review, one is This reviewer did purchase it and the other is 0 people think this review is helpful.