Air Optix Aqua contact lenses from Ciba Vision are a great lens that allows much more oxygen to get through the lens over most  contact lenses. This gives the wearer a comfortable contact lens with excellent  vision for up to one week  without removal. The contact lenses stay fresh and wet because of the AQUA moisture system which helps reduce the rate of lens dehydration.  Air Optix Aqua are a monthly replacement lens with frequency of replacement depending on usage. Please talk with your eye care practitioner for the wearing schedule that is best for you . Ciba vision is a well repected name brand in the contact lens world.  Each box contains 6 lenses.  Gives your eyes a break and let them feel like they are wearing no contact lenses at all.  Why not wear a name brand contact lens at a fraction of retail cost?