AIR OPTIX® plus HydraGlyde® contact lenses are great for those who want a simple reusable monthly replacement lens that is always there for you. These outstanding lenses feature our exclusive SmartShield® Technology to help protect your lenses from irritating deposits, while HydraGlyde® Moisture Matrix attracts and retains long-lasting lens surface moisture. So you can wear AIR OPTIX® plus HydraGlyde® contact lenses comfortably from Day 1 to Day 30. And you only need to replace them once a month.