Ray-Ban RX 6478 Sunglasses pair a slim metal frame with a square profile for everyday wear. The prescription-compatible design works well for both daily use and screen time. Key attributes: Black | Metal | Prescription lens compatible | Square shape | Full-rim frame | Dimensions & fit: Lens width: 53 mm | Bridge width: 18 mm | Temple length: 145 mm | Size: 53/18/145 (M) | Medium fit | Composition & care: Stainless steel | Clean lenses with a microfiber cloth and lens cleaner. Store in a protective case when not in use.