Ray-Ban RB3684 Chromance Glass Mirror Polarized Sunglasses are made to break boundaries. Featuring glass construction for the clearest vision, the lenses are polarized and outfitted with mirrors to help control glare. These polarized Ray-Ban sunglasses also boast Chromance technology, which brightens color, enhances contrast, and helps you see clearer than ever before. These elements are housed in frames built from metal and PEEKa special semicrystalline thermoplastic that marries excellent mechanical strength and good dimensional stability. The result: lightweight frames that hold up well to hard use. These Ray-Ban Chromance sunglasses come with a cleaning cloth and case. Manufacturer style #: RB3684. Polarized glass mirror lenses virtually eliminate glare Chromance technology brightens color, enhances contrast, and provides unmatched clarity 100% UVA and UVB protection Metal and PEEK thermoplastic frames for lightweight strength Rubberized, contoured temple tips for a secure, comfortable fit