Great glasses for blocking the blue lights- I get really bad vertigo and I?m hoping that these glasses will help when I?m staring at computer or gaming on Xbox. They aren?t super sturdy frames but they feel like you have nothing on, they don?t strain my eyes when putting them on. They also came with this blue light and a card that mimics what it?s supposed to block out and both glasses passed the test, they also came with a glasses screwdriver in case they come loose. I wish they gave an option for two black pairs rather then having to get a different pair- buts that?s just me being picky!