Ray-Ban ERIKA RB4171 681311 sunglasses combine a classic panthos silhouette with a rubber-finish nylon frame and gradient grey polycarbonate lenses. Designed for everyday sun protection and casual, modern wear. Key attributes: Blue | Grey | Nylon | UV protection | Polycarbonate lenses | Prescription lens compatible | Includes original case | 2-year manufacturer guarantee | Panthos silhouette | Rubber-finish frame | Gradient grey lenses | Full-rim design | Dimensions & fit: Lens width: 54 mm | Bridge: 18 mm | Temple: 145 mm | Height: 46 mm | High bridge fit | Composition & care: Nylon | Polycarbonate | Wipe lenses with a microfiber cloth and mild lens cleaner. Store in the included case when not in use. Avoid harsh chemicals and abrasive materials.