First observe whether the lens has scratches, impurities, bubbles, stripes, and check the outer packaging of the sunglasses. Regular sunglasses should be marked with the product name, color, diameter, quality level, manufacturer's name and trademark. UVB and CE marked sunglasses can ensure a certain amount of UV protection.

The lens should be flat and the transparency should be high.sunglasses online The sun lens material is glass and resin, and the best sun lens should be polarized lens. Polarized lenses can effectively filter out reflected light and harmful ultraviolet rays, and have functions such as anti-shattering and anti-wear. They are the most popular sunglasses.

The color of sunglasses should not only be matched according to your skin color, face shape, and clothing, but also should be selected according to the place you enter and leave. In general, black, tan, and gray filter well: gray lenses absorb evenly for any color spectrum

like：