Ray-Ban Round Gaze RX3947V frames combine a semi-rimless metal construction with a classic round silhouette, designed for easy prescription fitting and everyday wear. Key attributes: Gray | Silver | Metal | Prescription-ready | Round shape | Semi-rimless frame | Dimensions & fit: Lens width: 51 mm | Bridge: 22 mm | Temple: 145 mm | Composition & care: Metal (frame) | Nylon (nylor) (lens rim) | Wipe lenses with a microfiber cloth and store in the protective case when not in use.