SharkWith the Shark water sports goggles, swimming laps has never been so clear. Available in your prescription and with a yellow lens tint. Sizes: OS [A: 40 B: 30. 8 ED: 43 DBL: adj.] Lens Package: All of our goggles include a clear single vision Rx. Upgrade to light responsive (photochromic) lenses that change from clear to dark grey in the sun (rain or shine). Prescription Options: All of our frames include clear, single vision prescription lenses.