Description Features:Special designed to improve eyesight, especially eye focusing problems Suitable for both adult or children who has the problem of myopia, hyperopia and astigmatism Theory is very simple: when the eyes only look through the small holes, they naturally change focus to a relaxing standard, so that the eyeballs are relieved from the previous nervous focus. Specifications: Frame Type: Full rim Color: Black Lens Material: Polycarbonate Frames Material: Polycarbonate Package included: 1/2/3 x Glasses