Extreme H2O 54 contact lenses features a advanced breakthrough material in a prism ballast design with a toric back surface. This combination is what enables the toric lenses to perform at a higher level for visual acuity and all-day comfort. The stable design gives rapid stabilization and overall consistent performance.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 contact lenses are made with ultra hydrating non-ionic materials. These materials are unique in that they 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.