#199EB Scuba Spec Optical Lens Insert for Dive and Snorkeling Masks.

The #199EB Scuba Spec is a spectacle insert (i.e., eyeglasses) designed for use in all single lens dive and full-face snorkeling masks. The #199EB Scuba Spec insert can not be used in a mask with two separate eye pieces. The #199EB Scuba Spec insert attaches to the inner surface of the mask's faceplate using UV resistant, waterproof 3M^TM Dual Lock^TM tape (included with purchase). The nylon spectacle frame can accommodate any optical lens configuration and power: single vision, bifocal vision, or readers (magnifiers). If your eye prescription changes over time, simply replace the lenses.  Optical lenses are not included with the #199EB Scuba Spec insert. Optical lenses can be purchased from www.spectacle-inserts.com/optical-lenses or your local eye care professional. The #199EB Scuba Spec insert is easily transferable between masks.