Guess GU 2347 BLK 51 Black 51mm Eyeglasses Composite Composite frame Composite lens non-polarized Lens width: 51-16-135 millimeters Lens height: 29 millimeters Bridge: 16 millimeters Arm: 135 millimeters Buy with confidence! Authorized Retailer. Authenticity Guaranteed. Full retail package with all accessories.