Smith Optics Soundcheck Premium Lifestyle Polarized Designer Sunglasses - Tortoise/Chromapop Brown / Size 60-12-135 Frame Color: Tortoise Lens Color: Chromapop Brown Size: 60-12-135 Smith Optics Soundcheck Premium Lifestyle Polarized Designer Sunglasses 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