Fits all eyewear and made in the USA. Turn any eyewear into bifocal reading glasses. HydroTac Stick-On Bifocal Lenses adhere with water, are removable and reusable and provide optically correct magnification on any eyewear. Hydrotac lenses are lightweight, ultra-thin pliable lenses available in +1. 25, +1. 50, +1. 75, +2. 00, +2. 50 and +3. 00 diopters.