Saint Laurent M139 Optical Frame combines a timeless square silhouette with a polished acetate finish. Designed for everyday prescription wear, it balances refined style with practical function. Key attributes: Black | Transparent | Acetate | Not polarized | Full rim | Suitable for prescription lenses | Square shape | Polished finish | Dimensions & fit: Lens width: 54 mm | Bridge: 18 mm | Temple length: 145 mm | Lens height: 45.1 mm | One size | Standard bridge fit | Composition & care: Acetate | Clean lenses with a microfiber cloth and lens cleaner. Avoid abrasive cleaners and high heat. Store in a protective case when not in use.