Enki Eyewear Calypso Sunnies Amazing quality sunglasses from Australian brand Enki's choice of lens is the CR-39 because it has a superior refractive index, providing crystal-clear vision with minimal distortion. They are also lightweight, shatter-resistant, have exceptional scratch resistance, and are 100% UV-safe with a coating that effectively absorbs and reflects the entire UV spectrum. Worn once. Condition like new.