Just recently Biofinity silicone hydrogel contact lenses were offered by Cooper Vision.
Made with the most advanced lens technology, Aquaform Comfort Science, Biofinity contact lenses bring together essential elements like oxygen and water. High oxygen performance helps keep eyes white and healthy while the naturally wettable lens material holds water within the lens making it soft, moist and resistant to dehydration and protein deposits without surface treatments or wetting agents. Additionally, Biofinity contact lenses aspheric front surface design provides enhanced vision. Biofinity contact lenses can be worn daily for up to 29 days.
* To have a maximum comfort it's recommended to remove contact lenses from the eye regularly, clean and disinfect them.