SUN READERS WITH UP TO 4X MAGNIFICATION. These bifocal sun readers are ideal for days at the pool, at the beach, or on the back deck. They give you the magnification you need, with the sun protection you want. Rubberized frames are ultra comfortable. UV protection and polycarbonate shatter-proof lenses. Specify strength on order: 2.0, 2.5, 3.0, 3.5, or 4.0.