Serengeti Sunglasses - Pisa / Frame: Shiny Black Lens: Sedona - Serengeti Sunglasses Pisa have scratch/impact-resistant lenses that guarantee optical clarity 100% UV protection & reduce eye strain & fatigue. The Spectral Control® Lens System reduces glare. All Serengeti Sunglasses are designed with Photochromic lens technology making each lens adjust to light changes in the environment. Size: 62-14-125 mm