Benefits: Outstanding comfort. Manufactured with a Moisture Matrix, these lenses stay moist for longer to improve comfort levels. Advanced hydration. Cutting edge silicone hydrogel material increases oxygen permeability for healthy eyes. Prevents irritation. The Smart Shield technology limits the build-up of proteins & allergens. Alcon's Air Optix Plus Hydra Glyde contact lenses are premium lenses with enhanced oxygen permeability. This allows your eyes to breathe, keeping them clear, bright & healthy. They are convenient monthly lenses that incorporate various cutting edge technologies to ensure your eyes feel fresh & comfortable for longer. For example, the Hydra Glyde Moisture Matrix will keep your lenses moist throughout the day. Air Optix Plus Hydra Glyde also prevent the build-up of deposits, maintaining clear & bright eyes & excellent clarity of vision.