Dior 30Montaigne B7I Sunglasses combine a glossy black acetate butterfly frame with grey lenses and a Swarovski-crystal–adorned CD hinge for couture-ready everyday protection and style. Key attributes: Black | Nero | Acetate | 100% UVA/UVB protection | Filter category 3 | Suitable for prescription lenses | Butterfly frame shape | CD signature hinge in gold-finish metal with Swarovski crystal bead | Engraved CD signature on left lens | Engraved Christian Dior signature on temple interior | Glossy black acetate finish | Dimensions & fit: Lens width: 54 mm | Bridge: 20 mm | Temple: 130 mm | Manufacturer size: Medium | Composition & care: Acetate | Clean lenses with a microfiber cloth; store in the provided case; avoid exposure to solvents and excessive heat.