These contact lenses are the essence of convenience - you just put a pair in your eyes and then you can completely forget about them for another week. Biofinity contacts are made of highly oxygen permeable silicone hydrogel material which allows them to be kept in the eyes for 6 nights and 7 days continuously. Your eyes get enough oxygen and moisture, so you don't feel any discomfort at all. What's more, your eyes feel do fresh and hydrated that you don't even need any eye drops! If you live an irregular lifestyle or you find yourself forgetting to take your lenses out at night, Biofinity contacts are perfect for you.