These contact lenses from Celena's recently launched Natural Collection are sure to draw attention. The eyes are highlighted by a light green tint. Both day and nighttime wear are appropriate. Curvature of the Lens Base: 8.6 Water Content: 38% 14.5 mm in diameter Duration of Use: 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.