These contact lenses from Celena's recently launched Natural Collection are sure to draw attention. Lovely grey shade that resembles a desert and can be worn both during the day and at night. Curve of the Lens Base: 8.6 Water Content: 38% 14.5 mm in diameter Duration: three months Note: Two pairs of non-prescription cosmetic lenses are included in each pack. One prescription lens per degree is included in each prescription lens pack.