Alexander McQueen AM0551O Optical Frame pairs a clean square silhouette with an acetate build for everyday vision and easy prescription fitting. Key attributes: Black | Nero | Acetate | Compatible with prescription lenses | Comes with original Alexander McQueen case | Demo (trial) lenses included — replaceable by a qualified optician | Square silhouette | Full-rim frame | Transparent demo lenses | Dimensions & fit: Lens width (caliber): 52 mm | Bridge: 18 mm | Temple: 145 mm | Height: 43.3 mm | Size M | Composition & care: Acetate | Replace demo lenses with prescription lenses by a qualified optician. Clean with a soft, dry cloth. Store in the supplied case.