Ray-Ban Double Bridge RB 3647N sunglasses combine a slim metal double-bridge frame with shaded crystal lenses for everyday sun protection and citywear style. Key attributes: Gold | Brown | Metal | 100% UV protection | Shaded lenses | Non-polarized | Double bridge | Round shape | Dimensions & fit: Lens width: 51 mm | Bridge: 22 mm | Temple: 145 mm | Height: 48 mm | Standard fit | Composition & care: Metal (frame) | Crystal (lenses) | Wipe lenses with a microfiber cloth and store in the supplied case.