Product Info Biofinity are a silicone hydrogel continuous wear contact lens, manufactured by CooperVision and made using their patented Aquaform technology, which creates a hydrophilic silicone hydrogel lens that allows greater levels of oxygen to flow freely through the lens to the eye helping them stay moist and comfortable al day long. Higher oxygen supply lenses are known to create whiter healthier looking eyes for most contact lens wearers. Biofinity contact lenses are designed to be worn all day and up to 29 nights in a row, they posses and maintain a high level of water to ensure the lens remains soft and flexible, delivering real comfort through the day and night. Combining this perfect balance of water and exceptionally high levels of oxygen, Biofinity fells almost as natural as wearing no lenses at all. Biofinity is a naturally comfortable lens lens with no additives, coatings, wetting agents or surface treatments so nothing comes between you a more comfortable lens-wearing experience. Biofinity also contains Aspheric optics which enhances vision even in low lighting conditions and helps with peripheral vision. Why Choose Biofinity Super comfortable contact lens Continuous wear for up to 30 days Silicone hydrogel contact lens Aspheric optics for sharp vision Designed to retain water and minimise dry eyes A contact lens you can sleep in Other Options For an alternative Continuous wear contact lens you could check out Purevision 2 HD by Bausch and Lomb, but if you are looking for cheaper option check out Crystal Comfort which is a monthly disposable silicone hydrogel contact lens, and if its a silicone hydrogel daily you are looking for check out Crystal Air DailySwitch to Crystal Comfort Silicone Hydrogel Monthly Lenses and SAVE! Lens Brand Annual Cost(monthly replacement) Crystal Comfort £64/year Biofinity £110/year SAVE £46 EVERY YEAR! Can I Switch to Crystal Contact Lenses and Save Money? Enter your current contacts into the ‘Switch & Save Widget’ and find out.