Serengeti Borrego Large Sunglasses pair a bold, angular acetate frame with Serengeti's photochromic mineral lenses for adaptable, high-clarity sun protection. Key attributes: Brown | Havana | Acetate | Photochromic mineral lenses | Polarized option | Spectral Control technology | Ultra-light mineral lens | Accommodates prescription lenses | Angular silhouette | Large acetate frame | Square/rectangular shape | Dimensions & fit: Lens width: 58 mm | Bridge: 19 mm | Temple: 150 mm | Large fit | Base curve 6 | Composition & care: Acetate | Mineral lens | Clean lenses with a microfiber cloth and lens cleaner; store in a protective case when not in use.