Mont Blanc - MB0541, Geometric, general, men, BLACK BROWN(020 D), 55/19/145 plastic lens non-polarized Lens width: 55 millimeters Bridge: 19 millimeters Arm: 145 millimeters RX-Able Model: MB0541 Style:Full Rim Square Frame/Temple Color: Dark Grey/Transparent Brown/White - 020 Size: Lens-55 Bridge-19 Temple-145mm