Foster Grant Multi-Focus Zera Matte Black reading glasses are subtly delightful. This lightweight pair is manufactured with a matte acetate finish in a dark berry hue for an unexpected hint of sweetness. Multi-Focus Reading glasses utilize three different strength prescriptions in one pair of reading glasses. The bottom of the lens features the selected power for reading. The middle of the lens features a prescription slightly less than normal reading strength designed for computer use. The top of the lens features half the strength of the reading power for interacting with others.