Belstaff Sidney Sunglasses pair lightweight titanium construction with premium Carl Zeiss optics for clear vision and reliable sun protection in a refined round silhouette. Key attributes: Black | Titanium | 100% UV protection | Carl Zeiss and Japanese lenses | 7-hinge construction | Beta titanium temples | Round frame | High-grade Mazzucchelli and Japanese acetate accents | Hand-polished finish | Hand made in Japan | Dimensions & fit: Lens: 51 mm | Bridge: 21 mm | Temple: 145 mm | Composition & care: Titanium | Mazzucchelli acetate | Japanese acetate | Carl Zeiss lenses | Wipe lenses with a microfiber cloth and mild lens cleaner; store in a protective case when not in use; avoid exposure to harsh chemicals and extreme heat.