Three different applications of multifocal glasses for all your needs (for medium to close, transition, distances of about 3 feet) Distance Strength -- The reading glasses top part is 0 strength for distant viewing, walking, and shopping. This means you can wear progressive reading glasses anytime and anywhere. There is no longer a need to take it on or off as often. Transition Strength -- The multifocal progressive transition middle part is slightly diminished magnification for working on computers, videoconferencing on laptops, watching TV, etc. Reading Strength -- The bottom part of the lens is full power, which is your choice of magnification for reading small print in books up close or making diamond paintings or digital paintings. No line multifocal reading glasses also available as workspace multifocus glasses are designed for people who work at a desk or other workplace for long periods of time, providing more comfort and visual clarity. TR Sports Progressive Multifocus Reading Glasses Blue Light Blocking Readers 1.0~4.0 Name:Blue Light Blocking Sports Reading Glasses Style:Vintage Gender:Women Frame material:TR90 Lens material:PC Lens Feature: Progressive Face shape:All face shapes Size: Lens width: 53mm Bridge Size: 18mm Lens height: 42mm Temple Length:154mm Frame Width: 138m Package including: 1 pair of Reading glasses