Identify the quality of sunglasses

 Joined the UV protection if the Cheap Sunglasses in the production of material, so it is with UV protection function of sunglasses, such mirrors sold usually have UV logo, but due to the limitation of the present processing technology, the sunglasses can top 97% UV protection function, at less than 100%, so when you see a UV100% of Cheap Designer Sunglasses, In fact, it is not worthy of the name.

Lens material, resin, glass, whether Designer Mirrored Sunglasses UV protection, in addition to watch it with and without UV logo, you can also see the lenses connect box edge is smooth, smooth edges for the resin material of the lens, this lens UV protection function is stronger, wavy on the edge of the lens is commonly materials of Cheap Mirrored Sunglasses lenses, this lens not only UV protection function is poor, It is also easy to produce degrees during installation, which is harmful to our eyes. How to distinguish the material of lens is colophony or glass? Distinguishing method: is the resin piece or glass piece can see the weight, resin light, glass heavy; You can also tap it with your hand and listen to it.