Ray-Ban RB2180 Sunglasses pair a classic panthos round silhouette with protective grey lenses, making them a versatile choice for everyday sun protection and city wear. Key attributes: Black | Acetate | UV protection (UV400) | Lightweight frame | Compatible with prescription lenses | Available in two lens sizes (49 mm, 51 mm) | Round / panthos silhouette | Full-rim frame | Shiny finish | Dimensions & fit: Lens width: 49 mm | 51 mm | Bridge: 21 mm | Temple: 145 mm | 150 mm | Lens height: 47 mm | 49 mm | Composition & care: Acetate (frame) | Polycarbonate (lenses) | Wipe lenses with a microfiber cloth; store in a protective case when not in use; avoid harsh chemicals.