These Celena contact lenses are a part of the recently launched Define Collection. For black lovers, a stunning soul black shade with a hint of dark brown. highlights both light and dark eyes. Curve of the Lens Base: 8.6 Water Content: 38% 14.5 mm in diameter Use Period: 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.