Ray-Ban 0RB4187 Square Sunglasses Composite/Plastic Frame. Imported Plastic frame Gradient lens Non-Polarized 100% UV protective coating Lens width: 54 millimeters Lens height: 43.7 millimeters Bridge: 18 millimeters Arm: 145 millimeters 2" high Keyhole-bridge sunglasses featuring metal arms and rubberized tips Case included Lenses are prescription-ready (Rx-able).