Tom Ford Blue Block Butterfly Opticals combine a statement butterfly silhouette with built-in blue-block lenses for everyday screen protection. Lenses are ready-to-wear and removable to be fitted with a prescription by an eyecare professional. Key attributes: Black | Nero | Plastic and metal | Blue light protection | Ready-to-wear blue-block lenses, removable for prescription | Butterfly frame | Shiny plastic front with metal core | Metal 'T' logo on temples | Dimensions & fit: Size: 54-19-140 | Eye size: 54 mm | Composition & care: Plastic | Metal | Clean lenses with a microfiber cloth and lens-safe cleaner; avoid abrasive cleaners and solvents. Store in the protective case when not in use.