Air Optix Night & Day Aqua Monthly Contact Lenses 6PKAlways on the go? Air Optix Night & Day Aqua will not let you down as it can be worn for long periods of time, even as you sleep. This is made possible by the revolutionary aqua wetting technology of the lenses that allows them to let through 6 times more oxygen. They offer a high level of comfort and can be used for overnight wear for up to 30 days and nights. Expect deposit resistance and ultra clear view from day 1 through day 30.