Giorgio Armani Square Sunglasses pair a lightweight acetate frame with high-clarity crystal lenses to deliver everyday UV protection and refined style. Key attributes: Black | Nero | Acetate | UV protection (UV400) | Crystal (glass) lenses | Lightweight frame | Prescription-ready | Square frame | Full-rim silhouette | Dimensions & fit: Lens width: 52 mm | Bridge: 20 mm | Lens height: 42 mm | Temple length: 145 mm | Medium fit (size M) | Composition & care: Acetate (frame) | Crystal/glass (lenses) | Wipe lenses with a microfiber cloth; store in the supplied case; avoid contact with chemicals and abrasive materials.