SAVE ADDITIONAL $5.00 WITH BLACK FRAMES!! The Prosecutor Progressive Multi-Focal is a new totally progressive 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 by the fact that there are not specific areas designated to a specific strength. The lens is totally progressive 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 Measuements: 5 3/8" x 1 3/4" (temple to temple x height of lens)