Mediflex or also known as Biofinity®contact lenses are high-performing lenses that remain comfortable throughout all 4 weeks of wear. They are breathable and naturally wettable. This means that you’re less likely to need rewetting drops in order to have continuously moist and comfortable contact lenses. These monthly lenses are also approved for overnight wear. They can be worn for an entire week, including nights. Biofinity®lenses are engineered to be luxurious extended-wear contact lenses. Enjoy excellent vision with a lens that is healthy and comfortable to wear.