Air Optix are monthly replacements and are made to keep eyes comfortable and moisture rich. These contact lenses are incredibly breathable, allowing five times more oxygen through than other lenses. Air Optix uses TriComfort technology not only to let the contact lens breathe and retain moisture, but also to resist deposits and keep the lenses comfortable and wearable for up to a month.6 Pieces packageMaterial: Silicone Hydrogel Lens Duration: Monthly disposables Lens Type: Disposable Lens Diameter: 14.20mm Base Curve: 8.60mm33% Water content Ideal for long hours use Suitable for users who had trouble with contact lenses in the past or have problems with allergies