Serengeti Ethan Sunglasses combine a squared modern frame with Serengeti's mineral polarized 555nm lenses for clear, glare-reduced vision in bright conditions. Key attributes: Shiny Classic Havana | Bio-acetate | Mineral polarized 555nm lens | Photochromic | Spectral control | Lens category 3 | Prescription-ready (RX available) | Includes protective case and cleaning cloth | Squared modern shape | Structural edges | Retro-inspired silhouette | Shiny Classic Havana finish | Dimensions & fit: Lens width: 52 mm | Bridge: 22 mm | Temple: 145 mm | Medium fit | Composition & care: Frame: Bio-acetate | Lens: Mineral (polarized 555nm)