Serengeti Lenwood Sunglasses pair a large rectangular acetate frame with Serengeti’s photochromic, polarized mineral lenses for clear, comfortable vision during driving and everyday wear. Key attributes: Black | Acetate | Photochromic lenses | Polarized | Spectral Control | UV protection | Mineral (glass) lens | Prescription compatible (RX available) | Lightweight frame | 3-barrel hinges | Rectangular shape | Full-rim frame | Dimensions & fit: Lens width: 57 mm | Bridge: 18 mm | Temple length: 155 mm | Extra large fit | Composition & care: Frame: Bio-acetate | Lens: Mineral glass | Wipe lenses with a microfibre cloth. Rinse with lukewarm water to remove debris; avoid abrasive cleaners and solvents. Store in a protective case and avoid prolonged exposure to extreme heat.