Montblanc Semi-Rimless Eyeglasses MB485V 012 Size: 57mm Titanium/Black 485 Metal frame Plastic lens non-polarized Lens width: 57 millimeters Lens height: 33 millimeters Bridge: 18 millimeters Arm: 145 millimeters Frame Color: Titanium/Black Frame Material: Metal/Plastic Lens Color: N/A Size: 57-18-145 Made in Italy