Saint Laurent 521 OPT 001 Optical Frame combines classic round acetate construction with refined temple detailing, designed for everyday prescription wear. Key attributes: Black | Acetate | Prescription-ready | Comes with original Saint Laurent case | Round frame | Laser-engraved logo on temples | Iconic corner angle detail | Dimensions & fit: Lens width: 50 mm | Lens height: 46 mm | Bridge width: 21 mm | Arm length: 145 mm | Composition & care: Acetate