AIR OPTIX NIGHT & DAY AQUA Lenses have the first silicone hydrogel soft contact lens approved by the FDA that can be worn 24 hours a day for up to 30 days and nights even while you sleep. These revolutionary lenses are so breathable, allowing six times more oxygen through the lens than traditional soft lenses. Up to thirty days of continuous, natural vision means complete day-to-day freedom no daily insertion and removal, no cleaning and no lens care product expense. They're so comfortable, you might even forget you're wearing them. Plus, you'll see clearly all the time even when you get up in the middle of the night. Air Optix Night and Day Aqua lenses manufactured by Ciba Vision. They are ideal for patients who have problems with allergies, for the person with an active lifestyle, and for those who dislike the hassle of lens insertion and removal.