The East End Progressive Clear Reader is a tradtional rectangular frame packed with multifocal capability. The1.50 is 1.50 at the bottom for reading, about 1.0 in the middle for computer distance and .50 at the top for longer distance. The 2.0 is 2.0 at the bottom for reading, about 1.25 in the middle for computer distance and .50 at the top for longer distance. The 2.50 is 2.50 at the bottom for reading, about 1.50 in the middle for computer distance and1.0 at the top for longer distance. The price saves hundreds of dollars compared to progressives from your eye doctor. Not everyone can adapt to progressives. Do not hesitate to return them if you cannot adjust. Many people can wear them very comfortably and do love the savings. You may want to try a pair just to see if they can work for you. The temples have a spring hinge for a flexible and comfortable fit. Frame Measurements: 5 1/8" x 1 1/2" (temple to temple x height of lens)