Serengeti 101 Large Sunglasses combine a bold acetate frame with Serengeti’s ultra-light mineral, photochromic lenses for clear, glare-free vision in bright conditions. Key attributes: Shiny Black | Acetate | Photochromic lenses | Polarized | Spectral Control® technology | Ultra-light mineral lens | Lens category 3 | Anti-reflective coating on lens backside | Scratch and impact resistant | Non-prescription (RX not available) | Rectangular acetate frame | Saddle bridge | Straight temples | Dimensions & fit: Eye size: 61 mm | Bridge: 18 mm | Temple: 140 mm | Large fit | Composition & care: Frame: Cellulose propionate acetate | Lens: Borosilicate mineral glass (ultra-light mineral lens) | Clean lenses with a microfiber cloth and lens-safe cleaner. Store in a protective case when not in use. Avoid abrasive materials and prolonged exposure to extreme heat or solvents.