Guess GU2331 PUR 52-16 Violet Medium Plastic frame plastic lens non-polarized Lens width: 52 millimeters Bridge: 16 millimeters Arm: 135 millimeters Authentic Guess Designer Optical Eyewear 5" Frame Width 1.55" Lens Height Includes Original Guess Hard Case Spring Hinged for Added Comfort Demo Lens ; No Power. RX Ready.