Ray-Ban RB4392D Sunglasses combine a bold square frame with dark grey lenses for everyday sun protection and a confident style statement. Key attributes: Black | Nylon | UV protection | Non-polarized lenses | Prescription-ready | Square frame | Shiny finish | Dark grey lenses | Dimensions & fit: Lens width: 66 mm | Bridge: 17 mm | Temple length: 145 mm | Lens height: 51 mm | Composition & care: Frame: Nylon | Lens: Polycarbonate | Clean lenses with a microfiber cloth and store in the supplied case when not in use.