For Those who split them, Sunski will take care of or exchange them for free. They make the lenses from triacetate cellulose, Using the polarization layer sandwiched inside of, like a lot of bigger-conclusion lenses that enable avoid the polarization from remaining rubbed off. The lenses offer you 100% entire-spectrum https://popularsunglasses.us/articles/sunglasses-are-more-than-a-fashion-statement