A classic masculine design, with angular lines to create a chic frame with a unique character. Chadwick’s frame material is a combination of eco-friendly acetate and metal, added to this winning duo is our mineral lens for the ultimate visual experience of the world around you. The engraved metal bridge is the final sophisticated touch to this timeless design. The Purest Photochromic sun lenses. Photochromic lens perfectly adapting to only let the necessary light reach your eyes. Ideal for everyday use. Mix of robustness and adaptable materials for a solid and perfectly fitting frame.. The most elegant and robust hinge of the Serengeti Collection. Lens Technology : Mineral Photochromic Spectral Control. Lens VLT : 24% to 12%. Lens Color : 555nm. Frame Material : Acetate/Metal. Hinge : Serengeti Signature 5 Barrel Hinges