CR39 Polarized lenses are available in a multitude of trendy colors in solid or gradient tones. It also provides extreme clarity and comfort to sunglass wearers, whilst protecting them from harmful UV rays. CR39 Polarized is the perfect match for acetate frames since it is chemically resistant and light weight. Fashion sunglass designers can also find many color options to choose from when CR39 Polarized is treated with anti-reflective coatings or various mirror coatings. Available in size 75mm, base 4,6,8 in solid or gradient colors