Smith Dockside Polarized Sunglasses - Men's Imported Composite frame Chromapop lens polarized Lens width: 56 millimeters Lens height: 44 millimeters Bridge: 17 millimeters Arm: 125 millimeters Frame Color: Black Lens Color: Chromapop Gray Green Size: 56-17-125 Smith Optics Dockside Lifestyle Collection Polarized Sports Sunglasses/Eyewear Smith Optics Lens has Tapered Lens Technology that corrects the distortion by progressively tapering the lens from the optical center towards the outer edges. Light waves are thereby delivered straight to your eye resulting in zero distortion and true optical clarity. What you see is what you get