The Extreme H2O 59% Xtra is a soft contact lens that can be worn for up to a month and is made from the Benz G material hioxifilcon A with a water content of 59%. A reinforced, slightly-thicker-than-usual centre and an ability to bind large amounts of water enable it to offer outstanding comfort and make it particularly suitable for wearers with dry eyes who want to wear their lenses for long periods of time.
