Science to buy sunglasses to protect your eyes
1, when you buy sunglasses, care must be taken to lenses, tag, color and UV index. Each formal qualified product through quality testing proved that at the time of purchase should allow businesses to produce related certification.
Sunglasses, tag on a product's "identity", indicating the origin of the glasses, also hides a lot of useful information, such as whether the glasses you buy is a sunglasses or a light microscope, is Plexiglas or other material ... ... This should not be ignored.cheap oakleys
In addition, consumers want to keep labels or instructions, or let your business commitment on the product labels on the invoice, in the event of dispute, there would be no passive because of lack of evidence.
2, attention when you select lens surface should be smooth, non-corrugated, no blemishes, no bubbles, no galling. You want to place the lens on, from observation lenses there is no warping in horizontal direction. Rugged bubble lenses or marks, it is not appropriate to buy. Identification method for simple, put sunglasses on, through the lens observation targets in the distance, such as the window frame or door frame, then glasses up and down moves back and forth, the goal there should be no swing and a wavy deformation.cheap oakley sunglasses
3, in order to prevent ultraviolet light, would do well to purchase a light gray, light green, blue and gray lens sunglasses genuine shade effects, as these relatively soft colors, does not change color when you look at nature. Sunglasses, UV index is an important standard for filtering out ultraviolet radiation effects. Currently the vast majority of sunglasses the UV index between in-96%, dark-coloured lenses better than light lenses.oakley outlet
4, if you require shading effect is very strong, you should choose either darker lens. By bike or motorists could not select the lens color is too deep, so as not to not identified effective traffic lights of different colors.