Serengeti Polarized Rectangular 8919 Sport Nylon Silio, Matte Black, One Size

Corning patented a lens with improved mechanical and thermal durability for use in railway signal lamps, which were prone to overheating and breaking with extreme temperature changes.
The moment you put on a pair of Serengeti sunglasses, you see what others are missing. Brighter colors. Enhanced clarity. Reduced glare. All with less eyestrain