Prada PR23PS Sunglasses-1BO/3O1 Matte Black/Matte Gunmet (Gray Green Lens)-62mm Composite Acetate/Metal frame Glass lens Polarization Lens width: 62 millimeters Bridge: 12 millimeters Arm: 140 millimeters Buy with confidence! Authorized Retailer. Authenticity Guaranteed. Full retail package with all accessories.