Perception sunglass readers have an option for magnification strength of 1.5, 2.0, and 2.5. The magnification is only on the bottom portion of the sunglasses therefore making them multipurpose. The Perception is our light weight reader with comfortable rubber nose pads and ear grips. These are great for those needing just a bit of help. The Perception reading sunglasses are sporty yet have a traditional look to them.