You should consider when you choose sunglasses whether they have enough depth to the color of the lenses. Experientially, dark gray is better, followed by dark brown, black, blue and purple. The last two color lenses allow to enter more ultraviolet, but yellow, orange and pink as far as possible without. Apart from leisure, entertainment, if you really want to protect yourself from UV rays,you had better buy the color of gray, green, blue sunglasses, because these relatively soft colors, such as watching the scene does not change color, particularly suitable for car owners to distinguish traffic lights and traffic signals.In addition, if you want to shop online, be sure to choose a good reputation, a regular site to buy. Focus on sunglasses products, Firmoo is a good choice.