Optic Nerve Interchangable The Filament Carbon Polarized includes two interchangeable lens tints, smoke and brown that offer precision optics, thermal stability and superior clarity that eliminate reflected glare and offer 100% of UVA,B,C protection. The Shindig, Rodango, Membrane & Banshee all include three high impact polycarbonate lens tints: dark smoke/flash mirror for bright sun conditions, high definition copper/flash mirror for normal to variable light conditions, and clear lens for low light to night-time conditions. All three lens tints offer 100% UVA,B,C protection and are decentered for precision optical clarity. Unless noted all frames are TR90 Grilamid nylon. All interchangeable styles come with a hard shell case, a micro fiber cleaning cloth and a No-Hassle Lifetime Warranty.