These are the perfect glasses for those aspiring to be the next James Bond. Wearing them is like having eyes in the back of your head. These cool looking shades allow you to look straight ahead and see what's going on behind you. With these glasses you can discreetly watch someone or see if you are being followed without having to turn around. Features light weight plastic frames. Weight: 0.5 oz. These UV400 sunglasses meet ANSI Z80.3 general purpose UV requirements.