Stick-on bifocals reading lenses
They are lightweight and ultra thin lenses which make it easy to turn any sunglass or safety glasses into bifocals. They are simple to use, apply them to your glasses using water and let them dry. Stick-On Bifocal Lenses are removable and reusable so you can switch them to different glasses.
Try the Stick-On Bifocal Lenses for only $14.99, they are a cheap way to turn any pair of glasses into a bifocal!