Retrosuperfuture Ra Sunglasses pair a classic acetate frame with Zeiss extra black lenses for versatile everyday wear. Key attributes: Black | Acetate | Zeiss extra black lenses | CR-39 lens material | Includes original case | Square frame | Full rim | RSF logo at temples | Made in Italy | Dimensions & fit: Lens width: 52 mm | Bridge: 21 mm | Temple length: 145 mm | International fit | Composition & care: 100% acetate (frame) | CR-39 lenses