Karl Lagerfeld Sunglasses KL131S, Shiny Gunmetal 509 (Size 59) glass lens 100% Authentic Karl Lagerfeld designer sunglasses. Combining new style and affordability, functionality, and comfort, Karl Lagerfeld provides a unique take on designer sunglasses. Great choice for prescription sunglasses. Special for Amazon Customers: 10% OFF Prescription Lenses! See back of your receipt for details. Brand New - Factory packed, comes with original Karl Lagerfeld case and cleaning cloth.