Ready for bifocals but not ready for the expense? Transform any prescription glasses or sunglasses into bifocals with our Hydrotac Stick-On Bifocal Lenses. Simply apply a few drops of water to the inside of the clean lenses of your eyeglasses, position the two semi-circular ¾"x 1¼" bifocal lenses for your desired line of sight, and voila! Please specify magnification: 1.5, 2.0, 2.5, or 3.0.