The StickToIt Stick On Bifocal Lenses are a smart and secure alternative to convert any sunglasses or glasses into bifocal reading glasses. These flexible stickers come in a pair and are available in 9 different lens diopters, ranging from +1.00 to +3.50. That includes +1.00, +1.25, +1.50, +1.75, +2.00, +2.50, +2.75, +3.00, and +3.50 diopters. With dimensions of 30 millimeters of lens width and 15 millimeters of lens height, these thin stick on bifocal lenses provide optically correct magnification on any eyewear. They are also removable, reusable, and adhere with water. In addition, they have an easy application: you just have to clean your lenses, apply water, position your StickToIt bifocal stickers and let it dry. To sum up, the StickToIt Bifocal Lenses are flexible stick ons with great adherence, ideal to be safely used anywhere, anytime.