KZFOO sunglasses protect your eyes from the sun and harmful UV rays in style. Looking to order prescription sunglasses online? KZFOO makes it easy. All you need is your most recent lens prescription from your optometrist. After you select your frames, choose from several sunglasses lens options including color tint, mirrored lenses, polarized lenses, or gradient tint, all available for RX sunglasses lenses.