Two weeks of use is recommended for Acuvue Oasys lenses. The Hidraclear Plus technology behind these lenses hydrates and provides your eyes with an unmatched level of comfort. Acuvue Oasis lenses are the best option for both home users and ophthalmologists because they combine the strongest UV protection features on the market with the capacity to hold moisture from morning to night. Six contact lenses for a two-week period are included in each box. Sold as: Silicone Hydrogel, or Si-Hy, a box lens material 38 percent by volume of water Air 147 is the permeability Measurement of diameter: 14.0 mm 8.4 mm is the base curve. Producer: Johnson & Johnson Ireland is the origin