Extreme H2o Weekly 12 PackExtreme H2O Weekly contact lenses are the only disposable lens available in three diameters. Made with ultra hydrating non-ionic materials, these lenses have outstanding hydration and water retention characteristics which contribute to unsurpassed all-day comfort, clarity and dry eye relief. They are a great solution for those who have specific fitting needs and have had adaptation issues with silicone hydrogels.Advanced moisture retention for outstanding ALL-DAY comfort.Crisp, stable visual acuity.Increased wearing time.Improved ocular health.Deposit resistance.Manufactured by X-Cel Specialty Contacts.Extreme H2O Weekly contact lenses are made with GMA/HEMA copolymer, non-ionic materials. All lens dimensions and oxygen permeability present in the first hour of wear, will be present in the last. Lens comfort, movement, and fit will be stable throughout the day.