SAVE ADDITIONAL $5.00 WITH BLACK FRAMES!! The Prosecutor Multi-Focal is a new multi focal lens. The bifocal is the power you order by. The lens goes progressively lower in power from bottom to top. It is different than a traditional bifocal or trifocal in the fact that there are not specific areas designated to a specific strength. The lens is totally fluid from bottom to top. Feel free to try this product as you can always return it for a refund if it does not work for you. Our customers are loving these! Frame Measurements: 5 3/8" x 1 3/4" (temple to temple x height of lens)