Inspired by the hardworking heritage of Milwaukee, this plant-based sunglass frame is all about quality. Steeped in tradition, the Brewer was forged out of the need to provide a simple, no nonsense pair of shades for the everyday working man, who cares about his impact on the world around him. Designed for long days in changing light conditions, Auto Sun&';s photochromic technology automatically adjusts from a low-light, bright yellow with a 28% Visual Light Transmission (VLT), to a high-visibility persimmon with a 15% VLT for sunny conditions, while its polarization protects and heightens color, definition, and detail. Ellume Polarized Auto Sun: Polarized + Photochromic Ellume Color Filtration PROFLEX: non-slip rubber on nose/temples Z-RESIN: minimum 45% plant-based Rx Ready Camloc Hinge Impact Resistant Permashield Hardcoat