Fashion sunglasses comes, limited most to force!

Summer, seasons in the Sun, sportsman beauties out was less then a cool trendy pair of sunglasses was a great disappointment! SiGo glasses NET in the heat of the summer approaching force launched a new wave of fashion sunglasses to big promotions, promotional tangible, price advantage is very tempted!
First, of course, we have to understand that with a standard sunglasses should note what time: 1, must be filtered more than 96% of ultraviolet; 2, the degree of left and right lens color uniform and do not differ by more than 5%; 3, scenery through the lens can not be distorted; 4, wear lightweight comfortable; 5, not easily broken. 6, frames should close and comfortable on the nose and ears, lashes should not touch the lenses even slightly curved frame, lens will not fall off.